CN103197593A - Adjustable capacitor circuit capable of precisely adjusting figures - Google Patents
Adjustable capacitor circuit capable of precisely adjusting figures Download PDFInfo
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- CN103197593A CN103197593A CN2013100998386A CN201310099838A CN103197593A CN 103197593 A CN103197593 A CN 103197593A CN 2013100998386 A CN2013100998386 A CN 2013100998386A CN 201310099838 A CN201310099838 A CN 201310099838A CN 103197593 A CN103197593 A CN 103197593A
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Abstract
The invention discloses an adjustable capacitor circuit capable of precisely adjusting figures. The defects that a machine is abraded, service life is limited, capacitance accessed in a circuit cannot be precisely controlled and continuous adjustment cannot be achieved exist in the prior art. One end of a fixed capacitor C16 is connected with a drain electrode of a switching tube Q2 and is connected with an output port. The other end of the fixed capacitor C16 is connected with a drain electrode of a switching tube Q1. A source electrode of the switching tube Q1 is connected with a source electrode of the switching tube Q2, and is connected with the output port. A mains input circuit module provides a stable direct current for a singlechip main control unit. A keyboard input unit and a serial port input unit can input a given signal of a capacitance ratio value to the singlechip main control unit. The singlechip main control unit outputs a PWM control signal to an optoelectronic isolation and drive circuit and outputs a real-time capacitance ratio value signal to a four figure display unit. According to adjustable capacitor circuit capable of precisely adjusting the figures, the service life of an adjustable capacitor can be prolonged, and precise control on the capacitance accessed in the circuit can be improved.
Description
Technical field
The invention belongs to robotization, electrical control and field of electronic design, be specifically related to a kind of precise figures and regulate variable capacitance circuit.
Background technology
Electric capacity can be divided into fixed capacity, trimmer, variable capacitance etc. by structure, wherein variable capacitance as its name suggests, be the capacitor that a kind of electric capacity can be regulated within the specific limits, it all has a wide range of applications in fields such as current robotization, communication facilities and electronic devices.
Variable condenser can be divided into air dielectric variable condenser and solid dielectric variable capacitor by the dielectric material of its use.The electrode of air dielectric variable condenser is made up of two groups of sheet metals, changeless one group is stator in the two arrays of electrodes, one group that can rotate is moving plate, between moving plate and the stator with air as medium, this capacitor volume depend on two groups between pole piece distance and the size of pole piece area, so often volume is bigger.The semicircle moving plate that solid dielectric variable capacitor is made by metal material, stator and between mica sheet or plastic sheeting medium constitute, shell is transparent plastic, has shortcomings such as hum is big, easy to wear simultaneously though volume is little, in light weight.Though these two kinds of variable condenser can be realized the continuous adjusting of electric capacity, all can't directly obtain the size of the capacitance of place in circuit.
There are several fatal shortcomings in current variable capacitance: 1) have stator, moving plate, rotating shaft etc., have mechanical wear, serviceable life is limited; 2) condenser capacity is relevant with electrode slice area size, so capacitor is comparatively heavy; 3) can't obtain the capacitance of continuous variable; 4) all need manual adjustments, be difficult to be adapted to the occasion that automated capacitive is regulated; 5) can't accurately control the capacitance of place in circuit.6) must can't realize continuous adjusting for the electric capacity of a lot of other types at the electric capacity of certain particular type.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, proposed a kind of precise figures and regulated variable capacitance circuit.
A kind of precise figures are regulated variable capacitance circuit and are comprised fixed capacity C16, the first switching tube Q1, second switch pipe Q2, photoelectricity isolation and driving circuit, single-chip microcomputer main control unit, power supply input circuit, keyboard input block, serial ports input block, group of four figures display unit; The end of described fixed capacity C16 is connected with the drain electrode of second switch pipe Q2 and connects output port, the other end of fixed capacity C16 is connected with the drain electrode of the first switching tube Q1, the source electrode of the first switching tube Q1 is connected with the source electrode of second switch pipe Q2 and connects output port, and the power supply input circuit module provides galvanic current to the single-chip microcomputer main control unit; Keyboard input block, serial ports input block all can be to the given signals of single-chip microcomputer main control unit input capacitance ratio value; The single-chip microcomputer main control unit is isolated and driving circuit output pwm control signal to photoelectricity, to the real-time electric capacity ratio value signal of group of four figures display unit output;
Power supply input circuit comprises the first connector JP1, first resistance R 1, second resistance R 2, the first light emitting diode D1 and the second light emitting diode D2; 1 pin of the first connector JP1 connects outside+5V power supply, and 2 pin connect the external electric seedbed, and 3 pin connect outside+15V power supply; One end of first resistance R 1 and the first connector JP1+the 5V power input is connected the positive pole of another termination first light emitting diode D1; One end of second resistance R 2 and the first connector JP1+the 15V power input is connected the positive pole of another termination second light emitting diode D2; The negative pole of the first light emitting diode D1 is connected with the negative pole of the second light emitting diode D2 and ground connection.
The single-chip microcomputer main control unit comprises singlechip chip U1, the 3rd resistance R 3, the first button S1, the first polar capacitor C1, the first matching capacitance C2, the second matching capacitance C3, the first crystal oscillator Y1;
9 pin of described singlechip chip U1 are connected with the end of the first button S1, the negative pole of the first polar capacitor C1 and an end of the 3rd resistance R 3, and the other end of the first button S1 is connected with the positive pole of the first polar capacitor C1 and connects+the 5V power supply; 18 pin of singlechip chip U1 are connected with the end of the first crystal oscillator Y1, the end of the second matching capacitance C3,19 pin are connected with the other end of the first crystal oscillator Y1, the end of the first matching capacitance C2,20 pin are connected and ground connection with the other end of the 3rd resistance R 3, the other end of the second matching capacitance C3 and the other end of the first matching capacitance C2,29 pin, 31 pin, 40 pin connect+the 5V power supply, 12 pin, 13 pin, 14 pin, 15 pin, 16 pin, 17 pin, 30 pin, 32 pin, 33 pin, 34 pin, 35 pin, 36 pin, 37 pin, 38 pin and 39 foot rest skies; The model that described singlechip chip U1 adopts is AT89C51;
Described photoelectric isolating circuit comprises the first photoisolator U2, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 3rd matching capacitance C4 and the 4th matching capacitance C5;
1 pin of the described first photoisolator U2,4 pin, 7 foot rest skies, 2 pin are connected with an end of the 4th resistance R 4,3 pin ground connection, the end of 5 pin and the 3rd matching capacitance C4, the end of the 4th matching capacitance C5 is connected with the source electrode of the first switching tube Q1, one end of 6 pin and the 5th resistance R 5, the other end of the 4th matching capacitance C5 is connected with an end of the 6th resistance R 6, the other end of 8 pin and the 3rd matching capacitance C4, the other end of the 5th resistance R 5 connects and connects+the 15V power supply, the other end of the 4th resistance R 4 is connected with 27 pin of singlechip chip U1, and the other end of the 6th resistance R 6 is connected with the grid of the first switching tube Q1;
Described driving circuit comprises the second photoisolator U3, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the 5th matching capacitance C6 and the 6th matching capacitance C7;
1 pin of the described second photoisolator U3,4 pin, 7 foot rest skies, 2 pin are connected with an end of the 7th resistance R 7,3 pin ground connection, the end of 5 pin and the 5th matching capacitance C6, the end of the 6th matching capacitance C7 is connected with the source electrode of second switch pipe Q2, one end of 6 pin and the 8th resistance R 8, the other end of the 6th matching capacitance C7 is connected with an end of the 9th resistance R 9, the other end of 8 pin and the 5th matching capacitance C6, the other end of the 8th resistance R 8 connects and connects+the 15V power supply, the other end of the 7th resistance R 7 is connected with 28 pin of singlechip chip U1, and the other end of the 9th resistance R 9 is connected with the grid of second switch pipe Q2; The model that the first photoisolator U2 and the second photoisolator U3 adopt is 6N136;
Described keyboard input block comprises the tenth resistance R 10, the 11 resistance R 11, the 12 resistance R 12, the 13 resistance R 13, the second button S2, the 3rd button S3, the 4th button S4, the 5th button S5, the 7th matching capacitance C8, the 8th matching capacitance C9, the 9th matching capacitance C10, the tenth matching capacitance C11;
Described the tenth resistance R 10, the 11 resistance R 11, one termination+5V the power supply of the 12 resistance R 12 and the 13 resistance R 13, the end of the other end of the tenth resistance R 10 and the 7th matching capacitance C8,23 pin of singlechip chip U1 are connected with the end of the second button S2, the other end of the other end of the 7th matching capacitance C8 and the second button S2, the end of the second button S2, the end of the 3rd button S3, the end of the 4th button S4, the end of the 5th button S5, the end of the 8th matching capacitance C9, the end of the end of the 9th matching capacitance C10 and the tenth matching capacitance C11 is connected and ground connection; The other end of the 11 resistance R 11 is connected with the other end of the 8th matching capacitance C9,24 pin of singlechip chip U1 and the other end of the 3rd button S3, the other end of the 12 resistance R 12 is connected with the other end of the 9th matching capacitance C10,25 pin of singlechip chip U1 and the other end of the 4th button S4, and the other end of the 13 resistance R 13 is connected with the other end of the tenth matching capacitance C11,26 pin of singlechip chip U1 and the other end of the 5th button S5;
Described serial ports input block comprises level transferring chip U4, the second connector JP2, the second polar capacitor C12, the 3rd polar capacitor C13, quadripolarity capacitor C 14, the 5th polar capacitor C15;
1 pin of described level transferring chip U4 is connected with the positive pole of the second polar capacitor C12,2 pin are connected with the positive pole of the 3rd polar capacitor C13,3 pin are connected with the negative pole of the second polar capacitor C12,4 pin are connected with the positive pole of quadripolarity capacitor C 14,5 pin are connected with the negative pole of quadripolarity capacitor C 14,6 pin are connected with the positive pole of the 5th polar capacitor C15,7 pin are connected with 2 pin of the second connector JP2,8 pin are connected with 3 pin of the second connector JP2,9 pin are connected with 10 pin of singlechip chip U1,10 pin are connected with 11 pin of singlechip chip U1,11 pin, 12 pin, 13 pin, 14 foot rest skies, 15 pin ground connection, 16 pin are connected with the negative pole of the 3rd polar capacitor C13 and connect+the 5V power supply, the negative pole of the 5th polar capacitor C15 is connected with 5 pin of the second connector JP2,1 pin of the second connector JP2,4 pin, 6 pin, 7 pin, 8 pin, 9 foot rest skies; The model of described level transferring chip U4 is MAX232, and the model of the described second connector JP2 is RS-232;
Described group of four figures display unit comprises group of four figures pipe U5, code translator U6, the 14 resistance R 14, the 15 resistance R 15, the 16 resistance R 16, the 17 resistance R 17, the 18 resistance R 18, the 19 resistance R 19, the 20 resistance R 20, the 21 resistance R 21;
11 pin of described group of four figures pipe U5 connect an end of the 14 resistance R 14,7 pin connect an end of the 15 resistance R 15,4 pin connect an end of the 16 resistance R 16,2 pin connect an end of the 17 resistance R 17,1 pin connects an end of the 18 resistance R 18,10 pin connect an end of the 19 resistance R 19,5 pin connect an end of the 20 resistance R 20,3 pin connect an end of the 21 resistance R 21,6 pin connect 7 pin of code translator U6,8 pin connect 6 pin of code translator U6,9 pin connect 5 pin of code translator U6,10 pin connect 4 pin of code translator U6, the 14 resistance R 14, the 15 resistance R 15, the 16 resistance R 16, the 17 resistance R 17, the 18 resistance R 18, the 19 resistance R 19, the other end of the 20 resistance R 20 and the 21 resistance R 21 respectively with 1 pin of singlechip chip U1,2 pin, 3 pin, 4 pin, 5 pin, 6 pin, 7 pin are connected with 8 pin; 1 pin of code translator U6 and 8 pin ground connection, 16 pin connect+the 5V power supply, 22 pin of 2 pin and singlechip chip U1,3 pin are connected with 21 pin of singlechip chip U1.
The present invention has the following advantages with respect to prior art: the rotating shaft part of having saved variable condenser, can improve the serviceable life of variable condenser, eliminate because the loss that long-term friction causes, this method for designing can be carried out accurately adjustablely at all types of electric capacity in addition, has overcome the situation of current restriction tunable capacitor type fully.Because the method for single-chip microcomputer width modulation that adopts this variable condenser realizes the adjusting of capacitance, so this method not only can improve the serviceable life of variable condenser, more can improve the accurate controllability of the capacitance of place in circuit simultaneously.
Description of drawings
Fig. 1 is patent system block diagram of the present invention;
Fig. 2 is the power supply input circuit schematic diagram;
Fig. 3 is single-chip microcomputer main control unit circuit theory diagrams;
Fig. 4 is the photoelectric isolating circuit schematic diagram;
Fig. 5 is the driving circuit schematic diagram;
Fig. 6 is keyboard input-cell circuitry schematic diagram;
Fig. 7 is serial ports input-cell circuitry schematic diagram;
Fig. 8 is group of four figures display unit circuit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing this variable condenser is further described.
As shown in Figure 1, a kind of precise figures adjusting variable capacitance circuit comprises fixed capacity C16, the first switching tube Q1, second switch pipe Q2, photoelectricity isolation and driving circuit, single-chip microcomputer main control unit, power supply input circuit, keyboard input block, serial ports input block, group of four figures display unit; The end of described fixed capacity C16 is connected with the drain electrode of second switch pipe Q2 and connects output port, the other end of fixed capacity C16 is connected with the drain electrode of the first switching tube Q1, the source electrode of the first switching tube Q1 is connected with the source electrode of second switch pipe Q2 and connects output port, and the power supply input circuit module provides galvanic current to the single-chip microcomputer main control unit; Keyboard input block, serial ports input block all can be to the given signals of single-chip microcomputer main control unit input capacitance ratio value; The single-chip microcomputer main control unit is isolated and driving circuit output pwm control signal to photoelectricity, to the real-time electric capacity ratio value signal of group of four figures display unit output;
As shown in Figure 2, power supply input circuit comprises the first connector JP1, first resistance R 1, second resistance R 2, the first light emitting diode D1 and the second light emitting diode D2; 1 pin of the first connector JP1 connects outside+5V power supply, and 2 pin connect the external electric seedbed, and 3 pin connect outside+15V power supply; One end of first resistance R 1 and the first connector JP1+the 5V power input is connected the positive pole of another termination first light emitting diode D1; One end of second resistance R 2 and the first connector JP1+the 15V power input is connected the positive pole of another termination second light emitting diode D2; The negative pole of the first light emitting diode D1 is connected with the negative pole of the second light emitting diode D2 and ground connection.Wherein, first resistance R 1, second resistance R 2 are current-limiting resistance; The first light emitting diode D1, the second light emitting diode D2 are the emitting red light diode, as power light.
As shown in Figure 3, the single-chip microcomputer main control unit comprises singlechip chip U1, the 3rd resistance R 3, the first button S1, the first polar capacitor C1, the first matching capacitance C2, the second matching capacitance C3, the first crystal oscillator Y1;
9 pin of described singlechip chip U1 are connected with the end of the first button S1, the negative pole of the first polar capacitor C1 and an end of the 3rd resistance R 3, and the other end of the first button S1 is connected with the positive pole of the first polar capacitor C1 and connects+the 5V power supply; 18 pin of singlechip chip U1 are connected with the end of the first crystal oscillator Y1, the end of the second matching capacitance C3,19 pin are connected with the other end of the first crystal oscillator Y1, the end of the first matching capacitance C2,20 pin are connected and ground connection with the other end of the 3rd resistance R 3, the other end of the second matching capacitance C3 and the other end of the first matching capacitance C2,29 pin, 31 pin, 40 pin connect+the 5V power supply, 12 pin, 13 pin, 14 pin, 15 pin, 16 pin, 17 pin, 30 pin, 32 pin, 33 pin, 34 pin, 35 pin, 36 pin, 37 pin, 38 pin and 39 foot rest skies; The model that described singlechip chip U1 adopts is AT89C51;
As shown in Figure 4, described photoelectric isolating circuit comprises the first photoisolator U2, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 3rd matching capacitance C4 and the 4th matching capacitance C5;
1 pin of the described first photoisolator U2,4 pin, 7 foot rest skies, 2 pin are connected with an end of the 4th resistance R 4,3 pin ground connection, the end of 5 pin and the 3rd matching capacitance C4, the end of the 4th matching capacitance C5 is connected with the source electrode of the first switching tube Q1, one end of 6 pin and the 5th resistance R 5, the other end of the 4th matching capacitance C5 is connected with an end of the 6th resistance R 6, the other end of 8 pin and the 3rd matching capacitance C4, the other end of the 5th resistance R 5 connects and connects+the 15V power supply, the other end of the 4th resistance R 4 is connected with 27 pin of singlechip chip U1, and the other end of the 6th resistance R 6 is connected with the grid of the first switching tube Q1;
As shown in Figure 5, described driving circuit comprises the second photoisolator U3, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the 5th matching capacitance C6 and the 6th matching capacitance C7;
1 pin of the described second photoisolator U3,4 pin, 7 foot rest skies, 2 pin are connected with an end of the 7th resistance R 7,3 pin ground connection, the end of 5 pin and the 5th matching capacitance C6, the end of the 6th matching capacitance C7 is connected with the source electrode of second switch pipe Q2, one end of 6 pin and the 8th resistance R 8, the other end of the 6th matching capacitance C7 is connected with an end of the 9th resistance R 9, the other end of 8 pin and the 5th matching capacitance C6, the other end of the 8th resistance R 8 connects and connects+the 15V power supply, the other end of the 7th resistance R 7 is connected with 28 pin of singlechip chip U1, and the other end of the 9th resistance R 9 is connected with the grid of second switch pipe Q2; The model that the first photoisolator U2 and the second photoisolator U3 adopt is 6N136;
As shown in Figure 6, described keyboard input block comprises the tenth resistance R 10, the 11 resistance R 11, the 12 resistance R 12, the 13 resistance R 13, the second button S2, the 3rd button S3, the 4th button S4, the 5th button S5, the 7th matching capacitance C8, the 8th matching capacitance C9, the 9th matching capacitance C10, the tenth matching capacitance C11;
Described the tenth resistance R 10, the 11 resistance R 11, one termination+5V the power supply of the 12 resistance R 12 and the 13 resistance R 13, the end of the other end of the tenth resistance R 10 and the 7th matching capacitance C8,23 pin of singlechip chip U1 are connected with the end of the second button S2, the other end of the other end of the 7th matching capacitance C8 and the second button S2, the end of the second button S2, the end of the 3rd button S3, the end of the 4th button S4, the end of the 5th button S5, the end of the 8th matching capacitance C9, the end of the end of the 9th matching capacitance C10 and the tenth matching capacitance C11 is connected and ground connection; The other end of the 11 resistance R 11 is connected with the other end of the 8th matching capacitance C9,24 pin of singlechip chip U1 and the other end of the 3rd button S3, the other end of the 12 resistance R 12 is connected with the other end of the 9th matching capacitance C10,25 pin of singlechip chip U1 and the other end of the 4th button S4, and the other end of the 13 resistance R 13 is connected with the other end of the tenth matching capacitance C11,26 pin of singlechip chip U1 and the other end of the 5th button S5;
As shown in Figure 7, described serial ports input block comprises level transferring chip U4, the second connector JP2, the second polar capacitor C12, the 3rd polar capacitor C13, quadripolarity capacitor C 14, the 5th polar capacitor C15;
1 pin of described level transferring chip U4 is connected with the positive pole of the second polar capacitor C12,2 pin are connected with the positive pole of the 3rd polar capacitor C13,3 pin are connected with the negative pole of the second polar capacitor C12,4 pin are connected with the positive pole of quadripolarity capacitor C 14,5 pin are connected with the negative pole of quadripolarity capacitor C 14,6 pin are connected with the positive pole of the 5th polar capacitor C15,7 pin are connected with 2 pin of the second connector JP2,8 pin are connected with 3 pin of the second connector JP2,9 pin are connected with 10 pin of singlechip chip U1,10 pin are connected with 11 pin of singlechip chip U1,11 pin, 12 pin, 13 pin, 14 foot rest skies, 15 pin ground connection, 16 pin are connected with the negative pole of the 3rd polar capacitor C13 and connect+the 5V power supply, the negative pole of the 5th polar capacitor C15 is connected with 5 pin of the second connector JP2,1 pin of the second connector JP2,4 pin, 6 pin, 7 pin, 8 pin, 9 foot rest skies; The model of described level transferring chip U4 is MAX232, and the model of the described second connector JP2 is RS-232;
As shown in Figure 8, described group of four figures display unit comprises group of four figures pipe U5, code translator U6, the 14 resistance R 14, the 15 resistance R 15, the 16 resistance R 16, the 17 resistance R 17, the 18 resistance R 18, the 19 resistance R 19, the 20 resistance R 20, the 21 resistance R 21;
11 pin of described group of four figures pipe U5 connect an end of the 14 resistance R 14,7 pin connect an end of the 15 resistance R 15,4 pin connect an end of the 16 resistance R 16,2 pin connect an end of the 17 resistance R 17,1 pin connects an end of the 18 resistance R 18,10 pin connect an end of the 19 resistance R 19,5 pin connect an end of the 20 resistance R 20,3 pin connect an end of the 21 resistance R 21,6 pin connect 7 pin of code translator U6,8 pin connect 6 pin of code translator U6,9 pin connect 5 pin of code translator U6,10 pin connect 4 pin of code translator U6, the 14 resistance R 14, the 15 resistance R 15, the 16 resistance R 16, the 17 resistance R 17, the 18 resistance R 18, the 19 resistance R 19, the other end of the 20 resistance R 20 and the 21 resistance R 21 respectively with 1 pin of singlechip chip U1,2 pin, 3 pin, 4 pin, 5 pin, 6 pin, 7 pin are connected with 8 pin; 1 pin of code translator U6 and 8 pin ground connection, 16 pin connect+the 5V power supply, 22 pin of 2 pin and singlechip chip U1,3 pin are connected with 21 pin of singlechip chip U1.
Method of operating of the present invention is as follows: at first calculate required electric capacity number percent according to circuit required capacitance and the constant capacitance in the variable condenser, then this ratio is input in the variable condenser.The mode of input has two kinds: button input namely adds subtrahend and shift function realization by button; The serial ports input, namely the serial communication function by computing machine and variable condenser realizes.Two kinds of input modes all can be carried out real time modifying to the electric capacity number percent of place in circuit.The single-chip microcomputer main control unit produces the pwm control signal of a pair of complementation after receiving input signal, by photoelectricity is isolated and driving circuit is controlled two switching tubes break-make to achieve a butt joint into the control of the electric capacity number percent of circuit.Last single-chip microcomputer main control unit carries out group of four figures demonstration with the electric capacity number percent of current place in circuit, so that Real Time Observation.
Claims (8)
1. precise figures are regulated variable capacitance circuit, comprise fixed capacity C16, the first switching tube Q1, second switch pipe Q2, photoelectricity isolation and driving circuit, single-chip microcomputer main control unit, power supply input circuit, keyboard input block, serial ports input block, group of four figures display unit; It is characterized in that: the end of described fixed capacity C16 is connected with the drain electrode of second switch pipe Q2 and connects output port, the other end of fixed capacity C16 is connected with the drain electrode of the first switching tube Q1, the source electrode of the first switching tube Q1 is connected with the source electrode of second switch pipe Q2 and connects output port, and the grid of the grid of the first switching tube Q1 and second switch pipe Q2 is isolated with photoelectricity and linked to each other with driving circuit; The power supply input circuit module provides galvanic current to the single-chip microcomputer main control unit; Keyboard input block, serial ports input block all can be to the given signals of single-chip microcomputer main control unit input capacitance ratio value; The single-chip microcomputer main control unit is isolated and driving circuit output pwm control signal to photoelectricity, to the real-time electric capacity ratio value signal of group of four figures display unit output.
2. a kind of precise figures according to claim 1 are regulated variable capacitance circuit, and it is characterized in that: described power supply input circuit comprises the first connector JP1, first resistance R 1, second resistance R 2, the first light emitting diode D1 and the second light emitting diode D2; 1 pin of the first connector JP1 connects outside+5V power supply, and 2 pin connect the external electric seedbed, and 3 pin connect outside+15V power supply; One end of first resistance R 1 and the first connector JP1+the 5V power input is connected the positive pole of another termination first light emitting diode D1; One end of second resistance R 2 and the first connector JP1+the 15V power input is connected the positive pole of another termination second light emitting diode D2; The negative pole of the first light emitting diode D1 is connected with the negative pole of the second light emitting diode D2 and ground connection.
3. a kind of precise figures according to claim 1 are regulated variable capacitance circuit, and it is characterized in that: the single-chip microcomputer main control unit comprises singlechip chip U1, the 3rd resistance R 3, the first button S1, the first polar capacitor C1, the first matching capacitance C2, the second matching capacitance C3, the first crystal oscillator Y1;
9 pin of described singlechip chip U1 are connected with the end of the first button S1, the negative pole of the first polar capacitor C1 and an end of the 3rd resistance R 3, and the other end of the first button S1 is connected with the positive pole of the first polar capacitor C1 and connects+the 5V power supply; 18 pin of singlechip chip U1 are connected with the end of the first crystal oscillator Y1, the end of the second matching capacitance C3,19 pin are connected with the other end of the first crystal oscillator Y1, the end of the first matching capacitance C2,20 pin are connected and ground connection with the other end of the 3rd resistance R 3, the other end of the second matching capacitance C3 and the other end of the first matching capacitance C2,29 pin, 31 pin, 40 pin connect+the 5V power supply, 12 pin, 13 pin, 14 pin, 15 pin, 16 pin, 17 pin, 30 pin, 32 pin, 33 pin, 34 pin, 35 pin, 36 pin, 37 pin, 38 pin and 39 foot rest skies; The model that described singlechip chip U1 adopts is AT89C51.
4. a kind of precise figures according to claim 1 are regulated variable capacitance circuit, and it is characterized in that: described photoelectric isolating circuit comprises the first photoisolator U2, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 3rd matching capacitance C4 and the 4th matching capacitance C5;
1 pin of the described first photoisolator U2,4 pin, 7 foot rest skies, 2 pin are connected with an end of the 4th resistance R 4,3 pin ground connection, the end of 5 pin and the 3rd matching capacitance C4, the end of the 4th matching capacitance C5 is connected with the source electrode of the first switching tube Q1, one end of 6 pin and the 5th resistance R 5, the other end of the 4th matching capacitance C5 is connected with an end of the 6th resistance R 6, the other end of 8 pin and the 3rd matching capacitance C4, the other end of the 5th resistance R 5 connects and connects+the 15V power supply, the other end of the 4th resistance R 4 is connected with 27 pin of singlechip chip U1, and the other end of the 6th resistance R 6 is connected with the grid of the first switching tube Q1.
5. a kind of precise figures according to claim 1 are regulated variable capacitance circuit, and it is characterized in that: described driving circuit comprises the second photoisolator U3, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the 5th matching capacitance C6 and the 6th matching capacitance C7;
1 pin of the described second photoisolator U3,4 pin, 7 foot rest skies, 2 pin are connected with an end of the 7th resistance R 7,3 pin ground connection, the end of 5 pin and the 5th matching capacitance C6, the end of the 6th matching capacitance C7 is connected with the source electrode of second switch pipe Q2, one end of 6 pin and the 8th resistance R 8, the other end of the 6th matching capacitance C7 is connected with an end of the 9th resistance R 9, the other end of 8 pin and the 5th matching capacitance C6, the other end of the 8th resistance R 8 connects and connects+the 15V power supply, the other end of the 7th resistance R 7 is connected with 28 pin of singlechip chip U1, and the other end of the 9th resistance R 9 is connected with the grid of second switch pipe Q2; The model that the first photoisolator U2 and the second photoisolator U3 adopt is 6N136.
6. a kind of precise figures according to claim 1 are regulated variable capacitance circuit, and it is characterized in that: described keyboard input block comprises the tenth resistance R 10, the 11 resistance R 11, the 12 resistance R 12, the 13 resistance R 13, the second button S2, the 3rd button S3, the 4th button S4, the 5th button S5, the 7th matching capacitance C8, the 8th matching capacitance C9, the 9th matching capacitance C10, the tenth matching capacitance C11;
Described the tenth resistance R 10, the 11 resistance R 11, one termination+5V the power supply of the 12 resistance R 12 and the 13 resistance R 13, the end of the other end of the tenth resistance R 10 and the 7th matching capacitance C8,23 pin of singlechip chip U1 are connected with the end of the second button S2, the other end of the other end of the 7th matching capacitance C8 and the second button S2, the end of the second button S2, the end of the 3rd button S3, the end of the 4th button S4, the end of the 5th button S5, the end of the 8th matching capacitance C9, the end of the end of the 9th matching capacitance C10 and the tenth matching capacitance C11 is connected and ground connection; The other end of the 11 resistance R 11 is connected with the other end of the 8th matching capacitance C9,24 pin of singlechip chip U1 and the other end of the 3rd button S3, the other end of the 12 resistance R 12 is connected with the other end of the 9th matching capacitance C10,25 pin of singlechip chip U1 and the other end of the 4th button S4, and the other end of the 13 resistance R 13 is connected with the other end of the tenth matching capacitance C11,26 pin of singlechip chip U1 and the other end of the 5th button S5.
7. a kind of precise figures according to claim 1 are regulated variable capacitance circuit, and it is characterized in that: described serial ports input block comprises level transferring chip U4, the second connector JP2, the second polar capacitor C12, the 3rd polar capacitor C13, quadripolarity capacitor C 14, the 5th polar capacitor C15;
1 pin of described level transferring chip U4 is connected with the positive pole of the second polar capacitor C12,2 pin are connected with the positive pole of the 3rd polar capacitor C13,3 pin are connected with the negative pole of the second polar capacitor C12,4 pin are connected with the positive pole of quadripolarity capacitor C 14,5 pin are connected with the negative pole of quadripolarity capacitor C 14,6 pin are connected with the positive pole of the 5th polar capacitor C15,7 pin are connected with 2 pin of the second connector JP2,8 pin are connected with 3 pin of the second connector JP2,9 pin are connected with 10 pin of singlechip chip U1,10 pin are connected with 11 pin of singlechip chip U1,11 pin, 12 pin, 13 pin, 14 foot rest skies, 15 pin ground connection, 16 pin are connected with the negative pole of the 3rd polar capacitor C13 and connect+the 5V power supply, the negative pole of the 5th polar capacitor C15 is connected with 5 pin of the second connector JP2,1 pin of the second connector JP2,4 pin, 6 pin, 7 pin, 8 pin, 9 foot rest skies; The model of described level transferring chip U4 is MAX232, and the model of the described second connector JP2 is RS-232.
8. a kind of precise figures according to claim 1 are regulated variable capacitance circuit, and it is characterized in that: described group of four figures display unit comprises group of four figures pipe U5, code translator U6, the 14 resistance R 14, the 15 resistance R 15, the 16 resistance R 16, the 17 resistance R 17, the 18 resistance R 18, the 19 resistance R 19, the 20 resistance R 20, the 21 resistance R 21;
11 pin of described group of four figures pipe U5 connect an end of the 14 resistance R 14,7 pin connect an end of the 15 resistance R 15,4 pin connect an end of the 16 resistance R 16,2 pin connect an end of the 17 resistance R 17,1 pin connects an end of the 18 resistance R 18,10 pin connect an end of the 19 resistance R 19,5 pin connect an end of the 20 resistance R 20,3 pin connect an end of the 21 resistance R 21,6 pin connect 7 pin of code translator U6,8 pin connect 6 pin of code translator U6,9 pin connect 5 pin of code translator U6,10 pin connect 4 pin of code translator U6, the 14 resistance R 14, the 15 resistance R 15, the 16 resistance R 16, the 17 resistance R 17, the 18 resistance R 18, the 19 resistance R 19, the other end of the 20 resistance R 20 and the 21 resistance R 21 respectively with 1 pin of singlechip chip U1,2 pin, 3 pin, 4 pin, 5 pin, 6 pin, 7 pin are connected with 8 pin; 1 pin of code translator U6 and 8 pin ground connection, 16 pin connect+the 5V power supply, 22 pin of 2 pin and singlechip chip U1,3 pin are connected with 21 pin of singlechip chip U1.
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| CN2013100998386A CN103197593A (en) | 2013-03-26 | 2013-03-26 | Adjustable capacitor circuit capable of precisely adjusting figures |
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| CN2013100998386A CN103197593A (en) | 2013-03-26 | 2013-03-26 | Adjustable capacitor circuit capable of precisely adjusting figures |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091493A (en) * | 2014-07-16 | 2014-10-08 | 太原市奥特欣通电子科技有限公司 | Vehicle-mounted signal collection and conversion device for driver tests |
| CN105471056A (en) * | 2016-01-04 | 2016-04-06 | 南京铁道职业技术学院 | Wireless charging apparatus and method for wireless microphone |
| CN112628131A (en) * | 2020-12-19 | 2021-04-09 | 嘉兴泛达思节能技术有限公司 | Booster pump variable frequency drive controller |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601846A (en) * | 2004-10-13 | 2005-03-30 | 哈尔滨工业大学 | Static reactive compensator able to continuously regulating capacity reactive |
| CN101938133A (en) * | 2010-09-19 | 2011-01-05 | 浙江省电力试验研究院 | Reverse blocking type IGBT (Insulated Gate Bipolar Translator) based compensating method of PWM (Pulse-Width Modulation) control capacitance type SVC (Static Var Compensator) |
| CN102361357A (en) * | 2011-09-22 | 2012-02-22 | 重庆大学 | CPT (contact-less power transfer) system based on static capacitor array and control method thereof |
| CN203117721U (en) * | 2013-03-26 | 2013-08-07 | 杭州电子科技大学 | Precision digital regulation variable-capacitor circuit |
-
2013
- 2013-03-26 CN CN2013100998386A patent/CN103197593A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601846A (en) * | 2004-10-13 | 2005-03-30 | 哈尔滨工业大学 | Static reactive compensator able to continuously regulating capacity reactive |
| CN101938133A (en) * | 2010-09-19 | 2011-01-05 | 浙江省电力试验研究院 | Reverse blocking type IGBT (Insulated Gate Bipolar Translator) based compensating method of PWM (Pulse-Width Modulation) control capacitance type SVC (Static Var Compensator) |
| CN102361357A (en) * | 2011-09-22 | 2012-02-22 | 重庆大学 | CPT (contact-less power transfer) system based on static capacitor array and control method thereof |
| CN203117721U (en) * | 2013-03-26 | 2013-08-07 | 杭州电子科技大学 | Precision digital regulation variable-capacitor circuit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091493A (en) * | 2014-07-16 | 2014-10-08 | 太原市奥特欣通电子科技有限公司 | Vehicle-mounted signal collection and conversion device for driver tests |
| CN105471056A (en) * | 2016-01-04 | 2016-04-06 | 南京铁道职业技术学院 | Wireless charging apparatus and method for wireless microphone |
| CN112628131A (en) * | 2020-12-19 | 2021-04-09 | 嘉兴泛达思节能技术有限公司 | Booster pump variable frequency drive controller |
| CN112628131B (en) * | 2020-12-19 | 2021-11-16 | 嘉兴泛达思节能技术有限公司 | Booster pump variable frequency drive controller |
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Application publication date: 20130710 |