CN107786200B - Frequency divider - Google Patents
Frequency divider Download PDFInfo
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- CN107786200B CN107786200B CN201610785060.8A CN201610785060A CN107786200B CN 107786200 B CN107786200 B CN 107786200B CN 201610785060 A CN201610785060 A CN 201610785060A CN 107786200 B CN107786200 B CN 107786200B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
- H03K23/64—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two
- H03K23/66—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses
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Abstract
The invention discloses a frequency divider, which belongs to the field of electricity and comprises a direct-current power supply, a chip, a capacitor, a resistor, a switch, a PCB single panel and a BNC connector. The invention realizes the frequency division of any integer within the range of 1 to 10 of the input signal, and has simple circuit design and good stability.
Description
Technical Field
The invention belongs to the field of electricity, and particularly relates to a frequency divider.
Background
In an electrical system, different frequency signals are often required to be processed, wherein the frequency signals comprise high-frequency signals converted into low-frequency signals, a frequency divider is a circuit capable of processing the frequency of input signals to enable the frequency of output signals to meet relevant relations, from the viewpoint of circuit structure, the frequency divider is essentially a L C filter network formed by a capacitor and an inductance coil, a high-frequency channel is a high-pass filter and only allows high-frequency signals to pass and blocks low-frequency signals, a low-frequency channel is just opposite and only allows low-frequency signals to pass and blocks high-frequency signals, a middle-tone channel is a band-pass filter and only allows frequencies between two frequency dividing points which are lower than one another and higher than one to pass, and both high-frequency components and low-frequency components are blocked, in the actual frequency divider, attenuation resistors are added sometimes to balance sensitivity differences between high and low-frequency units, in addition, impedance compensation networks formed by resistors and capacitors are added in some frequency dividers to make impedance curves of a sound boxes flat so as to facilitate driving of power amplifiers, in the actual application process, the frequency divider often only produces frequency dividing effects of fixed frequency dividing ratios, and cannot achieve the frequency dividing effects of 2:1, 3, 1: 4, 5: 1: 8, and finally, the frequency division conversion principle of the frequency divider is not capable of the conventional frequency divider chip, and the frequency divider, and the chip is not capable of achieving the frequency division of the conventional frequency division of frequency division conversion.
Disclosure of Invention
In order to solve the above problems of the conventional frequency divider, the present invention provides a frequency divider which can perform continuously adjustable frequency division processing of 2:1, 3:1, 4:1, 5:1, 6:1, 7:1, 8:1, 9:1 and 10:1 on an input signal, can perform frequency division more accurately by replacing a chip with higher precision, for example, a chip of 74L S08, and can stabilize the signal by adding a resistor.
The purpose of the invention is realized by the following technical scheme: a frequency divider comprises a direct current switch power supply, a chip, a capacitor, a resistor, a PCB single panel, a switch and a BNC connector, wherein the direct current power supply is connected with a No. 16 pin of a chip 1, a No. 14 pin of a chip 2 and one end of the capacitor; the pin 1 connecting resistor 5 of the chip 1, the pin 2 connecting resistor 1 of the chip 1, the pin 3 of the chip 1 is connected with the pin 13 of the chip 2, the pin 4 connecting resistor 2 of the chip 1, the pin 5 connecting resistor 6 of the chip 1, the pin 6 connecting resistor 7 of the chip 1, the pin 7 connecting resistor 3 of the chip 1, the pin 8 of the chip 1 is connected with the ground, the pin 9 connecting resistor 8 of the chip 1, the pin 10 connecting resistor 4 of the chip 1, the pin 11 connecting resistor 9 of the chip 1, the pin 13 of the chip 1 is connected with the pin 7 of the chip 2, the pin 14 of the chip 1 is connected with the pin 12 of the chip 2, the pin 15 of the chip 1 is connected with the wire 0 of the switch, the pin 7 of the chip 2 is connected with the ground, the pin 11 of the chip 2 is connected with the BNC connector 2, and the pin 12 of the chip 2 is connected with the BNC connector 1; one end of the capacitor is connected with a direct current power supply, and the other end of the capacitor is connected with the ground; 1 connecting switch's of resistance 1 wiring, 2 line of resistance 2 connecting switch, 3 line of resistance 3 connecting switch, 4 line of resistance 4 connecting switch, 5 line of resistance 5 connecting switch, 6 line of resistance 6 connecting switch, 7 line of resistance 7 connecting switch, 8 line of resistance 8 connecting switch, 9 line of resistance 9 connecting switch.
The frequency divider enables to divide an input signal by any integer number in the range from 1 to 10.
The direct-current switch power supply, the chip, the capacitor and the resistor are fixed on the PCB single panel, and the switch and the BNC connector are fixed on the front panel of the case.
Chip 1, chip 2 be two different model chips, chip 1 model be CD4017, chip 2 model be 74L S08.
The resistance values of the resistor 1, the resistor 2, the resistor 3, the resistor 4, the resistor 5, the resistor 6, the resistor 7, the resistor 8 and the resistor 9 are all equal to 100 ohms; the resistors are connected between the chip 1 and the switch.
The capacitance value of the capacitor is 0.1 microfarad; one end of the capacitor is grounded.
The switch is a ten-gear knob switch, and the gear number of each gear of the switch corresponds to the realized frequency division multiplying power.
The direct current switch power supply is a 5 volt 3 ampere direct current switch power supply, and the direct current switch power supply is connected with alternating current input/output, direct current input/output and ground.
BNC connects 1, BNC and connects 2 and all be female, and BNC connects 1 shell and connects No. 8 feet of chip 1, and BNC connects 2 shell and connects No. 7 feet of chip 2
Compared with the prior art, the invention has the advantages that:
(1) the invention can carry out continuous adjustable frequency division processing of 2:1, 3:1, 4:1, 5:1, 6:1, 7:1, 8:1, 9:1 and 10:1 on input signals;
(2) by replacing a chip with higher precision, such as a chip of 74L S08, the frequency division is more accurate;
(3) the signal is more stable through the addition of the resistor;
(4) the invention has simple circuit design and good stability.
Drawings
FIG. 1 is a circuit diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the invention comprises a direct current switch power supply, a chip 1, a chip 2, a capacitor, nine resistors, a switch, a PCB single panel, and two BNC connectors, wherein the direct current switch power supply, the chip, the capacitor, and the resistors are fixed on the PCB single panel, and the switch and the BNC connectors are fixed on the front panel of the cabinet.
The direct current switch power supply is connected with a pin 16 of the chip 1, a pin 14 of the chip 2 and one end of the capacitor; the pin 1 connecting resistor 5 of the chip 1, the pin 2 connecting resistor 1 of the chip 1, the pin 3 of the chip 1 is connected with the pin 13 of the chip 2, the pin 4 connecting resistor 2 of the chip 1, the pin 5 connecting resistor 6 of the chip 1, the pin 6 connecting resistor 7 of the chip 1, the pin 7 connecting resistor 3 of the chip 1, the pin 8 of the chip 1 is connected with the ground, the pin 9 connecting resistor 8 of the chip 1, the pin 10 connecting resistor 4 of the chip 1, the pin 11 connecting resistor 9 of the chip 1, the pin 13 of the chip 1 is connected with the pin 7 of the chip 2, the pin 14 of the chip 1 is connected with the pin 12 of the chip 2, the pin 15 of the chip 1 is connected with the wire 0 of the switch, the pin 7 of the chip 2 is connected with the ground, the pin 11 of the chip 2 is connected with the BNC connector 2, and the pin 12 of the chip 2 is connected with the BNC connector 1; one end of the capacitor is connected with a direct current power supply, and the other end of the capacitor is connected with the ground; 1 connecting switch's of resistance 1 wiring, 2 line of resistance 2 connecting switch, 3 line of resistance 3 connecting switch, 4 line of resistance 4 connecting switch, 5 line of resistance 5 connecting switch, 6 line of resistance 6 connecting switch, 7 line of resistance 7 connecting switch, 8 line of resistance 8 connecting switch, 9 line of resistance 9 connecting switch.
Chip 1, chip 2 are two different model chips, chip 1 model be CD4017, chip 2 model be 74L S08.
The resistances of the resistor 1, the resistor 2, the resistor 3, the resistor 4, the resistor 5, the resistor 6, the resistor 7, the resistor 8 and the resistor 9 are all equal to 100 ohms. The resistors are connected between the chip 1 and the switch.
The capacitance value of the capacitor is 0.1 microfarad; one end of the capacitor is grounded.
The switch is a ten-gear knob switch, and the gear number of each gear of the switch corresponds to the realized frequency division multiplying power.
The direct current switch power supply is a 5 volt 3 ampere direct current switch power supply, and the direct current switch power supply is connected with alternating current input/output, direct current input/output and ground.
BNC connects 1, BNC and connects 2 and all be female head, and BNC connects 1 shell and connects No. 8 feet of chip 1, and BNC connects 2 shell and connects No. 7 feet of chip 2.
The working principle of the invention is as follows: the chip 1 and the chip 2 which are powered by the direct current switch power supply carry out frequency division processing on signals, a knob switch is rotated to determine the required frequency division ratio, and the capacitor, the resistor 1, the resistor 2, the resistor 3, the resistor 4, the resistor 5, the resistor 6, the resistor 7, the resistor 8 and the resistor 9 meet the requirement of current signal stability.
The art related to the present invention is not described in detail.
Claims (2)
1. A frequency divider, characterized by: the circuit comprises a direct current switch power supply, a chip, a capacitor, a resistor, a PCB single panel, a switch and a BNC connector, wherein the direct current power supply is connected with a No. 16 pin of a first chip (1), a No. 14 pin of a second chip (2) and one end of the capacitor; the pin 1 of the first chip (1) is connected with the fifth resistor (5), the pin 2 of the first chip (1) is connected with the first resistor (1), the pin 3 of the first chip (1) is connected with the pin 13 of the second chip (2), the pin 4 of the first chip (1) is connected with the second resistor (2), the pin 5 of the first chip (1) is connected with the sixth resistor (6), the pin 6 of the first chip (1) is connected with the seventh resistor (7), the pin 7 of the first chip (1) is connected with the third resistor (3), the pin 8 of the first chip (1) is connected with the ground, the pin 9 of the first chip (1) is connected with the eighth resistor (8), the pin 10 of the first chip (1) is connected with the fourth resistor (4), the pin 11 of the first chip (1) is connected with the ninth resistor (9), the pin 13 of the first chip (1) is connected with the pin 7 of the second chip (2), no. 14 pins of the first chip (1) are connected with No. 12 pins of the second chip (2), No. 15 pins of the first chip (1) are connected with the No. 0 wiring of the switch, No. 7 pins of the second chip (2) are grounded, No. 11 pins of the second chip (2) are connected with the BNC connector 2, and No. 12 pins of the second chip (2) are connected with the BNC connector 1; one end of the capacitor is connected with a direct current power supply, and the other end of the capacitor is connected with the ground; the first resistor (1) is connected with a No. 1 wiring of the switch, the second resistor (2) is connected with a No. 2 wire of the switch, the third resistor (3) is connected with a No. 3 wire of the switch, the fourth resistor (4) is connected with a No. 4 wire of the switch, the fifth resistor (5) is connected with a No. 5 wire of the switch, the sixth resistor (6) is connected with a No. 6 wire of the switch, the seventh resistor (7) is connected with a No. 7 wire of the switch, the eighth resistor (8) is connected with a No. 8 wire of the switch, and the ninth resistor (9) is connected with a No. 9 wire of the switch;
the direct-current switch power supply, the chip, the capacitor and the resistor are fixed on the PCB single panel, and the switch and the BNC connector are fixed on the front panel of the case;
the first chip (1) and the second chip (2) are chips with two different models, the model of the first chip (1) is CD4017, and the model of the second chip (2) is 74L S08;
the resistances of the first resistor (1), the second resistor (2), the third resistor (3), the fourth resistor (4), the fifth resistor (5), the sixth resistor (6), the seventh resistor (7), the eighth resistor (8) and the ninth resistor (9) are all equal to 100 ohms; each resistor is connected between the first chip (1) and the switch;
the capacitance value of the capacitor is 0.1 microfarad; one end of the capacitor is grounded;
the switch is a ten-gear knob switch, and the gear number of each gear of the switch corresponds to the realized frequency division multiplying power;
the direct current switch power supply is a 5 volt 3 ampere direct current switch power supply, and the direct current switch power supply is connected with alternating current input/output, direct current input/output and ground;
BNC connects 1, BNC and connects 2 and all be female, and BNC connects 1's shell and connects No. 8 feet of first chip (1), and BNC connects 2's shell and connects No. 7 feet of second chip (2).
2. The frequency divider of claim 1, wherein: the frequency divider enables to divide an input signal by any integer number in the range from 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610785060.8A CN107786200B (en) | 2016-08-31 | 2016-08-31 | Frequency divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610785060.8A CN107786200B (en) | 2016-08-31 | 2016-08-31 | Frequency divider |
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| Publication Number | Publication Date |
|---|---|
| CN107786200A CN107786200A (en) | 2018-03-09 |
| CN107786200B true CN107786200B (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610785060.8A Active CN107786200B (en) | 2016-08-31 | 2016-08-31 | Frequency divider |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2924932Y (en) * | 2006-07-10 | 2007-07-18 | 宁波大学 | Frequency divider circuit |
| CN101006645A (en) * | 2004-08-06 | 2007-07-25 | 皇家飞利浦电子股份有限公司 | Frequency divider |
| CN101154945A (en) * | 2006-09-28 | 2008-04-02 | 升达半导体股份有限公司 | Programmable frequency divider with 50 percent of work period |
| CN102035538A (en) * | 2010-12-16 | 2011-04-27 | 电子科技大学 | High-speed programmable frequency divider |
| CN103684423A (en) * | 2012-09-25 | 2014-03-26 | 上海华虹集成电路有限责任公司 | Variable synchronous clock frequency division circuit |
| CN205195688U (en) * | 2015-11-26 | 2016-04-27 | 中国科学院大连化学物理研究所 | Frequency divider device |
-
2016
- 2016-08-31 CN CN201610785060.8A patent/CN107786200B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101006645A (en) * | 2004-08-06 | 2007-07-25 | 皇家飞利浦电子股份有限公司 | Frequency divider |
| CN2924932Y (en) * | 2006-07-10 | 2007-07-18 | 宁波大学 | Frequency divider circuit |
| CN101154945A (en) * | 2006-09-28 | 2008-04-02 | 升达半导体股份有限公司 | Programmable frequency divider with 50 percent of work period |
| CN102035538A (en) * | 2010-12-16 | 2011-04-27 | 电子科技大学 | High-speed programmable frequency divider |
| CN103684423A (en) * | 2012-09-25 | 2014-03-26 | 上海华虹集成电路有限责任公司 | Variable synchronous clock frequency division circuit |
| CN205195688U (en) * | 2015-11-26 | 2016-04-27 | 中国科学院大连化学物理研究所 | Frequency divider device |
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| Publication number | Publication date |
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| CN107786200A (en) | 2018-03-09 |
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