CN204068770U - Telecar brake polar protective circuit - Google Patents
Telecar brake polar protective circuit Download PDFInfo
- Publication number
- CN204068770U CN204068770U CN201320678169.3U CN201320678169U CN204068770U CN 204068770 U CN204068770 U CN 204068770U CN 201320678169 U CN201320678169 U CN 201320678169U CN 204068770 U CN204068770 U CN 204068770U
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- China
- Prior art keywords
- diode
- triode
- brake
- resistance
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000001681 protective effect Effects 0.000 title claims abstract description 12
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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- Stopping Of Electric Motors (AREA)
Abstract
The utility model discloses a kind of telecar brake polar protective circuit; comprise power supply, drive motors and IC chip; F, B, T end of IC chip connects diode D3, D4, D5 respectively; the common output end contact resistance R18 of diode D3, D4, D5; the base stage of resistance R18 connecting triode Q10; resistance R17 accesses power supply, and diode D1, D2 for braking drive motors access the collector electrode of triode Q10.This circuit utilizes the unilateal conduction characteristic of diode D3, D4, D5, signal feedback is realized the object of motor brake to Drive and Control Circuit, increase the reliability of this braking circuit, stability, the flexibility of raising car with this, thus increase the handling of telecar braking circuit and play car enjoyment.
Description
Technical field
The utility model relates to a kind of Automatic brake control circuit for remote control car, especially can play the protective circuit of polarity protection effect to brake control circuit.
Background technology
At present, remote-control toy vehicle does not generally all have brake control circuit, but relies on motor, gear wheel group and wheel skin increase resistance to reduce buffer distance, and this braking effect is not obvious, and power consumption.
Utility model content
Manipulate problem for solving when car just stops because car cushions being inconvenient to of bringing, the utility model provides a kind of brake polar protective circuit.
Technical solution adopted in the utility model is: a kind of telecar brake polar protective circuit; comprise power Vcc, drive motors MG2 and IC chip; F, B, T end of described IC chip connects diode D3, diode D4, diode D5 respectively; the common output end contact resistance R18 of described diode D3, diode D4, diode D5; the base stage of resistance R18 connecting triode Q10; resistance R17 accesses power Vcc, and diode D1, diode D2 for braking drive motors access the collector electrode of triode Q10.
Compared with prior art, this circuit can make the various function signals of telecar accurately control braking circuit, motor is made not have induced voltage, thus generation braking moment, rear drive motor is made to be in halted state, thus reach brake object, utilize the unilateal conduction characteristic of diode (D3, D4, D5), signal feedback is realized the object of motor brake to Drive and Control Circuit, increase the reliability of this braking circuit, stability, the flexibility of raising car with this, thus increase the handling of telecar braking circuit and play car enjoyment.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of brake polar protective circuit.
Fig. 2 is the control flow block diagram that brake controls automatically.
In Fig. 1, Q2, Q3, Q8, Q10 are triode (9014), Q4, Q5, Q9 are for driving triode (772), Q6, Q7 are for driving triode (882), R11, R12, R13, R18 are biasing resistor (1K), and R14, R15, R16 are resistance (220 Ω), and D1, D2, D3, D4, D5 are diode (IN4148), MG2 is rear drive motor, and U3 is IC chip (RX-2)
Embodiment
Below in conjunction with accompanying drawing, the utility model brake automatic control circuit is described further.
The utility model brake automatic control circuit polar protective circuit; as shown in Figure 1; form polar protective circuit by diode D3, diode D4, diode D5, resistance R18, triode Q10 form pull-down circuit, form isolation protective circuit with supplying resistance R17 and diode D1, diode D2.
The principle that the utility model brake controls polar protective circuit is automatically: when the F of IC chip U3 holds (i.e. FORWARD end, 11st pin) when receiving forward motion remote control command, F end is high potential, the base stage of the emitter ↑ → triode Q6 of the base stage ↑ → triode Q2 of one route biasing resistor R11 → triode Q2 ↑, triode Q6 saturation conduction, due to the collector electrode ↓ → resistance R14 ↓ → triode Q5 of triode Q2 base stage ↓, triode Q6 also saturation conduction, now supply voltage VCC is by the collector electrode of triode Q5 → form loop to the collector electrode ↓ → GND of motor M G2 → triode Q6, drive motors rotates forward, the advance merit realizing telecar is led to, simultaneously, another road electric current is by diode D4, due to diode D3, diode D5 negative pole is that high potential ends, ensure that B end and T hold no-voltage, collector electrode ↓ → diode the D1 of the base stage ↑ → triode Q10 of → resistance R18 → triode Q10, diode D2 positive pole ↓, diode D1, diode D2 does not have electric current to flow through, pull-down circuit quits work, triode Q6, triode Q7 is in normal operating conditions, now brake function does not have action, car advances and normally works.
When the B of IC chip U3 holds (i.e. BACKWARD end, 10th pin) when receiving backward movement remote control command, B end is high potential, the base stage of the emitter ↑ → triode Q7 of the base stage ↑ → triode Q3 of one route biasing resistor R12 → triode Q3 ↑, triode Q6 saturation conduction, due to the collector electrode ↓ → resistance R15 ↓ → triode Q4 of triode Q3 base stage ↓, triode Q4 also saturation conduction, now supply voltage VCC is by the collector electrode of triode Q4 → form loop to the collector electrode ↓ → GND of motor M G2 → triode Q7, drive motors MG2 reverses, the retrogressing merit realizing telecar is led to, simultaneously, due to diode D3, diode D4 negative pole is that high potential ends, ensure that F end and another road electric current of T no-voltage are by diode D5, collector electrode ↓ → diode the D1 of the base stage ↑ → triode Q10 of → resistance R18 → triode Q10, diode D2 positive pole ↓, diode D1, diode D2 does not have electric current to flow through, pull-down circuit quits work, triode Q6, triode Q7 is in normal operating conditions, now brake function does not have action, car retreats normal work.
When the T of IC chip U3 holds (i.e. TURBO end, 12nd pin) receive accelerated motion remote control command time, T end is high potential, the base stage of the emitter ↑ → triode Q6 of the base stage ↑ → triode Q8 of one route biasing resistor R13 → triode Q8 ↑, triode Q6 saturation conduction, due to the collector electrode ↓ → resistance R16 ↓ → triode Q9 of triode Q8 base stage ↓, triode Q9 also saturation conduction, now supply voltage VCC is by the collector electrode of triode Q9 → form loop to the collector electrode ↓ → GND of motor M G2 → triode Q6, drive motors MG2 rotates forward, the advance acceleration work realizing telecar leads to, simultaneously, another road electric current is by diode D3, due to diode D5, diode D4 negative pole is that high potential ends, ensure that F end and B hold no-voltage, collector electrode ↓ → diode the D1 of the base stage ↑ → triode Q10 of → resistance R18 → triode Q10, diode D2 positive pole ↓, diode D1, diode D2 does not have electric current to flow through, pull-down circuit quits work, triode Q6, triode Q7 is in normal operating conditions, now brake function does not have action, car advances and normally works.
When F(and FORWARD of IC chip U3 holds, 11st pin), B(and BACKWARD holds, 10th pin), T(and TURBO holds, 12nd pin) end is not when all receiving remote control command, then low level, diode D3, diode D4, diode D5 does not have electric current to pass through, base stage ↓ → VCC the voltage of now resistance R18 ↓ → triode Q10 is through the collector electrode ↑ → diode D1 of resistance R17 → triode Q10, diode D2 conducting, inertia is eliminated circuit and is started working, triode Q6, triode Q7 saturation conduction and resistance R17, diode D1, diode D2 forms pull-down circuit, triode Q6, triode Q7 is equivalent to Closing Switch by motor two pole short circuit, motor inertia loss of voltage thus produce braking moment, rear drive motor M G2 is stopped instantaneously, reach brake object.Under the polarity protection of diode D3, diode D4, diode D5, F, B, T of IC chip are held can normally work separately, is independent of each other, reaches polarity protection object.
Claims (1)
1. a telecar brake polar protective circuit; comprise power Vcc, drive motors MG2 and IC chip; it is characterized in that: F, B, T end of described IC chip connects diode D3, diode D4, diode D5 respectively; the common output end contact resistance R18 of described diode D3, diode D4, diode D5; the base stage of resistance R18 connecting triode Q10; resistance R17 accesses power Vcc, and diode D1, diode D2 for braking drive motors access the collector electrode of triode Q10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320678169.3U CN204068770U (en) | 2013-10-30 | 2013-10-30 | Telecar brake polar protective circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320678169.3U CN204068770U (en) | 2013-10-30 | 2013-10-30 | Telecar brake polar protective circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204068770U true CN204068770U (en) | 2014-12-31 |
Family
ID=52210211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320678169.3U Expired - Lifetime CN204068770U (en) | 2013-10-30 | 2013-10-30 | Telecar brake polar protective circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204068770U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110510111A (en) * | 2019-09-09 | 2019-11-29 | 西安航空制动科技有限公司 | Quiet brake protection circuit and its design method with anti-interference ability |
-
2013
- 2013-10-30 CN CN201320678169.3U patent/CN204068770U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110510111A (en) * | 2019-09-09 | 2019-11-29 | 西安航空制动科技有限公司 | Quiet brake protection circuit and its design method with anti-interference ability |
| CN110510111B (en) * | 2019-09-09 | 2024-01-30 | 西安航空制动科技有限公司 | Static brake protection circuit with anti-interference capability and design method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Star Industrial Park Chenghai District 515824 Guangdong city of Shantou province (Xiadao Road on the north side of town of Hua) Patentee after: RESTAR GROUP Co.,Ltd. Address before: 47, C39, 515824 floor, Wan Ling International Center, 230 Tianhe Road, Guangzhou, Guangdong, Tianhe District Patentee before: RESTAR GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20141231 |
|
| CX01 | Expiry of patent term |