CN202455582U - Signal generating circuit of nuclear marker light - Google Patents
Signal generating circuit of nuclear marker light Download PDFInfo
- Publication number
- CN202455582U CN202455582U CN2011205723210U CN201120572321U CN202455582U CN 202455582 U CN202455582 U CN 202455582U CN 2011205723210 U CN2011205723210 U CN 2011205723210U CN 201120572321 U CN201120572321 U CN 201120572321U CN 202455582 U CN202455582 U CN 202455582U
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- triode
- resistance
- resistor
- collector electrode
- base stage
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Abstract
The utility model discloses a signal generating circuit of a nuclear marker light. The signal generating circuit is characterized in that the circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5 and a resistor R6, the resistor R1, the resistor R2, the resistor R3, the resistor R4, the resistor R5 and the resistor R6 are connected with a power supply VCC. The resistor R3 is connected with a collector of a triode Q1, the resistor R1 is connected with a base of a triode Q2, the resistor R2 is connected with a base of the triode Q1, the resistor R4 is connected with a collector of the triode Q2, the resistor R5 is connected with a base of a triode Q3, and the resistor R6 is connected with a collector of the triode Q3. A capacitor C1 is connected between the collector of the triode Q1 and the base of the triode Q2, a capacitor C2 is connected between the base of the triode Q1 and the collector of the triode Q2, and the collector of the triode Q2 is connected with the base of the triode Q3. An RC oscillating circuit is adopted for generating square signals, cost is low, a range of input voltage is wide, a circuit structure is simple, and reliability is high.
Description
Technical field
The utility model relates to a kind of square wave generation circuit.
Background technology
The generation circuit that square-wave signal is all arranged in the existing identification light equipment.Square-wave signal gets into power amplifier module, reloads load from power amplifier output amplifying signal, and in general, square wave is sent by single-chip microcomputer, and the input voltage range of single-chip microcomputer is less, causes damage easily, and the price comparison of single-chip microcomputer simultaneously is expensive, has improved cost.
The utility model content
The purpose of the utility model provides the nuclear identification light signal generating circuit that a kind of input voltage range is big, cost is low.
To achieve these goals, adopt following technical scheme: a kind of nuclear identification light signal generating circuit is characterized in that: said circuit comprises resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5 and the resistance R 6 that links to each other with power supply VCC; Resistance R 3 is connected to the collector electrode of triode Q1, and resistance R 1 is connected to the base stage of triode Q2, and resistance R 2 is connected to the base stage of triode Q1; Resistance R 4 is connected to the collector electrode of triode Q2; Resistance R 5 is connected to the base stage of triode Q3, and resistance R 6 is connected to the collector electrode of triode Q3, is connected with capacitor C 1 between the base stage of the collector electrode of triode Q1 and triode Q2; Be connected with capacitor C 2 between the collector electrode of the base stage of triode Q1 and triode Q2; And the collector electrode of triode Q2 links to each other with the base stage of triode Q3, the grounded emitter of triode Q1, triode Q2 and triode Q3, and the emitter of triode Q4 meets power supply VCC; Base stage connects the collector electrode of triode Q3, connects load behind the collector electrode connecting resistance R7.
The utility model adopts the RC oscillating circuit to produce square-wave signal, and cost is lower, and wider range of input voltage, and circuit structure is simple, and reliability is higher.
Description of drawings
Fig. 1 is the circuit diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done and to be further described.
As shown in Figure 1, a kind of nuclear identification light signal generating circuit comprises the resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5 and the resistance R 6 that link to each other with power supply VCC; Resistance R 3 is connected to the collector electrode of triode Q1, and resistance R 1 is connected to the base stage of triode Q2, and resistance R 2 is connected to the base stage of triode Q1; Resistance R 4 is connected to the collector electrode of triode Q2; Resistance R 5 is connected to the base stage of triode Q3, and resistance R 6 is connected to the collector electrode of triode Q3, is connected with capacitor C 1 between the base stage of the collector electrode of triode Q1 and triode Q2; Be connected with capacitor C 2 between the collector electrode of the base stage of triode Q1 and triode Q2; And the collector electrode of triode Q2 links to each other with the base stage of triode Q3, the grounded emitter of triode Q1, triode Q2 and triode Q3, and the emitter of triode Q4 meets power supply VCC; Base stage connects the collector electrode of triode Q3, connects load behind the collector electrode connecting resistance R7.
When circuit powered on, Vcc was added to circuit, because two triode Q1 are forward biased so they are in conducting state with Q2, in addition, also was that coupling capacitor Cl and C2 are charged to and are bordering on Vcc voltage.Thereby cause positive voltage to be added on the base stage, make the triode electric conduction quantity bigger, thereby collector voltage is descended.
Because two transistors can not be identical, therefore, must there be the transistor also can be bigger a little than another initial electric conduction quantity.The electric conduction quantity of supposing triode Ql is slightly larger, and its collector voltage descends will be than triode Q2 hurry up.As a result, R2 and capacitor C 2 be coupled to the voltage of triode Q2 base stage will be than bigger with the voltage negative value that resistance R l is coupled to triode Ql base stage by capacitor C 1.This just makes the electric conduction quantity of triode Q2 reduce, and its collector voltage has then correspondingly increased.
The voltage that triode Q2 collector electrode raises closes back triode Ql base stage as the positive voltage lotus root.Increasing of triode Q1 electric conduction quantity causes that its collector voltage further descends, and the base voltage that Q2 is ordered about in the continuous discharge of capacitor C 2 is to negative increase, and Q2 ends until triode, and triode Ql is under saturation condition till the conducting.At this moment, capacitor C 2 is still in discharge, and triode Q2 level remain off fully discharges until capacitor C 2 and makes the base voltage of triode Q2 above till the cutoff.Triode Q2 begins conducting then, has so just begun second half cycle of multivibrator.
Triode Q2 begins conducting, and its collector voltage just begins to descend, and capacitor C l begins to discharge, and what cause being added to triode Q1 basis set is negative voltage.The electric current of triode Q1 conduction reduces, and causes that triode Ql collector voltage raises.This is to be coupled to triode Q2 base stage as positive voltage, causes the electrorheological of triode Q2 conduction big.Just as the work of preceding half cycle, this is to play positive feedback effect, and last till triode Ql by, triode Q2 under saturation condition till the conducting.Triode Q2 is retained in cut-off state, until capacitor C 1 fully put, till triode Ql begins to break away from cut-off state.At this moment, the complete cycle begins once more.
Two-stage conducting, the time that ends are depended on the time constant RC of capacitor C 1, resistance R l and capacitor C 2, resistance R 2.The more little transformation of time constant is also just fast more, and the output frequency of multivibrator is just high more.Can adjust two time constant RC and not wait, make that the ON time of two triodes is different, the duty ratio of adjustment output waveform.
The square wave that is produced by oscillating circuit is in the amplification through triode Q3, and main its of triode Q4 followed the effect with switch, to increase load-carrying ability.Directly receive on the load LED lamp behind the square wave process current-limiting resistance R7.
Claims (1)
1. examine the identification light signal generating circuit for one kind, it is characterized in that: said circuit comprises resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5 and the resistance R 6 that links to each other with power supply VCC, and resistance R 3 is connected to the collector electrode of triode Q1; Resistance R 1 is connected to the base stage of triode Q2; Resistance R 2 is connected to the base stage of triode Q1, and resistance R 4 is connected to the collector electrode of triode Q2, and resistance R 5 is connected to the base stage of triode Q3; Resistance R 6 is connected to the collector electrode of triode Q3; Be connected with capacitor C 1 between the base stage of the collector electrode of triode Q1 and triode Q2, be connected with capacitor C 2 between the collector electrode of the base stage of triode Q1 and triode Q2, and the collector electrode of triode Q2 links to each other with the base stage of triode Q3; The grounded emitter of triode Q1, triode Q2 and triode Q3; The emitter of triode Q4 meets power supply VCC, and base stage connects the collector electrode of triode Q3, connects load behind the collector electrode connecting resistance R7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205723210U CN202455582U (en) | 2011-12-31 | 2011-12-31 | Signal generating circuit of nuclear marker light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205723210U CN202455582U (en) | 2011-12-31 | 2011-12-31 | Signal generating circuit of nuclear marker light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202455582U true CN202455582U (en) | 2012-09-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205723210U Expired - Fee Related CN202455582U (en) | 2011-12-31 | 2011-12-31 | Signal generating circuit of nuclear marker light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202455582U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743182A (en) * | 2016-04-27 | 2016-07-06 | 包树文 | Charging circuit |
| CN112398333A (en) * | 2020-11-20 | 2021-02-23 | 深圳市捷诚技术服务有限公司 | Negative voltage generating circuit |
-
2011
- 2011-12-31 CN CN2011205723210U patent/CN202455582U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743182A (en) * | 2016-04-27 | 2016-07-06 | 包树文 | Charging circuit |
| CN112398333A (en) * | 2020-11-20 | 2021-02-23 | 深圳市捷诚技术服务有限公司 | Negative voltage generating circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20161231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |