CN2191129Y - Interrupted electricity supply controller for automobile circuit - Google Patents
Interrupted electricity supply controller for automobile circuit Download PDFInfo
- Publication number
- CN2191129Y CN2191129Y CN 93226712 CN93226712U CN2191129Y CN 2191129 Y CN2191129 Y CN 2191129Y CN 93226712 CN93226712 CN 93226712 CN 93226712 U CN93226712 U CN 93226712U CN 2191129 Y CN2191129 Y CN 2191129Y
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- China
- Prior art keywords
- power supply
- low frequency
- automobile
- field effect
- frequency oscillator
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Abstract
The utility model discloses an interrupted electricity supply controller for automobile circuit. The interrupted electricity supply controller for automobile circuit is placed between a car power (1) and a load (7) of a negative pole connected with the car. The interrupted electricity supply controller for automobile circuit comprises an N-channel field effect transistor (4) which is used to carry out the periodic on-off control to the load current loop. A drain electrode or a source electrode of the field effect transistor (4) are respectively connected with one end of the positive electrode or the load (7) of the car power (1). An isolated power supply (2) is used to supply the power for an oscillator (3) with low frequency. An overcurrent protection circuit (6) is used to turn off the field effect transistor (4) when the load (7) is communicated with the over current.
Description
The utility model relates to a kind of controller to the load discontinuous power supply, especially the discontinuous power supply controller that uses in the automobile circuit.
Steering indicating light in the automobile circuit, loudspeaker all are in by the mode of operation of discontinuous power supply.Therefore need come they are carried out periodic automatic switch control with controller.Usually this quasi-controller mainly is made up of relay, by opening or the incompatible purpose that reaches the load discontinuous power supply of relay.Because the contact of relay is in use aging easily or damage, makes this quasi-controller have the shortcoming that load-bearing capacity is little, the life-span is short.Its contact also can produce other electrical equipment in the circuit in opening and closing moments and disturb.In addition, because the action response speed of relay is slower, make existing controller be difficult to realize that failure-free protects automatically.So existing controller is all not ideal enough aspect capacity, life-span and reliability.
The purpose of this utility model provides and a kind ofly replaces the continuation power supply control apparatus of above-mentioned relay contact with electronic component, and it has bigger load-bearing capacity and long life-span, and has the failure-free automatic protection functions.
Solution of the present utility model is: finish control to load current with the N slot field-effect transistor as on-off element, because compare with the P-channel field-effect transistor (PEFT) transistor, the on state resistance of N channel transistor is less, can adapt to more that load is in big these characteristics of current work state usually in the automobile circuit; The signal that the on off state of N channel transistor is controlled is produced by low frequency oscillator.Because automobile power source negative pole and load one end have connect car body, on-off element can only be between the positive source and the load other end, for satisfying this particular requirement, power to low frequency oscillator with an insulating power supply, make the grid potential of N channel transistor when conducting be higher than the anodal current potential of automobile power source; Circuit overcurrent protection in the control circuit can turn-off field effect transister apace when load short circuits or excess current, protect automatically to realize the failure-free excess current.
Above-mentioned insulating power supply can be made of transistor and oscillation transformer, and insulation is isolated between the primary and secondary coil of oscillation transformer.This insulating power supply provides electric energy by automobile power source, and portion forms vibration and goes out alternating current at the oscillation transformer secondary induction within it, powers to low frequency oscillator and circuit overcurrent protection after rectification.The relative automobile power source current potential of the current potential of this insulating power supply dc output end can change.
Lead between above-mentioned field effect transister source electrode and the load can replace with a minimum current sampling resistor of resistance, and circuit overcurrent protection can be made of sampled signal amplifier and binary pair.The sampled signal amplifier input terminal is connected with the source electrode of field effect transister, and its mouth provides the excess current energizing signal to a trigger end of binary pair.When load current surpassed predetermined value, the binary pair upset was turned off field effect transister.
By the controller that above solution constituted; owing to use the N slot field-effect transistor as on-off element; and has the insulating power supply power supply to satisfy the particular requirement of automobile circuit; also has circuit overcurrent protection; compare with existing controller; lifting capacity increases and has prolonged service life, has also eliminated the interference to other electrical equipment in the circuit.
The utility model is described in further detail below in conjunction with accompanying drawing and an embodiment.
Fig. 1 is the circuit block diagram of an embodiment of the utility model.
Fig. 2 is the schematic circuit diagram of Fig. 1 embodiment controller.
Fig. 3 is the structural representation of Fig. 1 embodiment controller.
This embodiment controller is by the insulating power supply in the circuit block diagram shown in Figure 1 (2), low frequency oscillator (3), and N slot field-effect transistor (4), sample resistance (5), circuit overcurrent protection (6) are formed.The electric current of automobile power source (1) output constitutes the loop through sample resistance (5) and load (7) to car body again through field effect transister (4) drain-to-source.
Insulating power supply (2) mainly is made of the transistor in the schematic circuit diagram shown in Figure 2 (11), oscillation transformer (12), rectifier (13).After controller and automobile power source (1) are connected; the inner starting of oscillation of this power supply (2); after the alternating current that oscillation transformer (12) secondary induction goes out is rectified into galvanic current, be used for being connected with low frequency oscillator (3), field effect transister (4) source electrode and load (7) one ends to low frequency oscillator (3) and circuit overcurrent protection (6) power supply insulating power supply (2) negative pole of output end.Along with periodically conducting or shutoff of field effect transistor (4), corresponding the changing of current potential of insulating power supply (2) mouth: during field effect transistor (4) conducting, its negative pole of output end current potential is near equaling the anodal current potential of automobile power source (1), and its output head anode current potential then is higher than the anodal current potential of automobile power source (1); When field effect transistor (4) was turn-offed, its negative pole of output end current potential then equaled the car body current potential.
Low frequency oscillator (3) is made of time base circuit among Fig. 2 (8) and peripheral cell.Its mouth is connected with field effect transister (4) grid.It has a reset terminal R, can be used to make output to stop.
Circuit overcurrent protection (6) is made of the signal amplifier among Fig. 2 (10), binary pair (9).The current sampling signal that takes out from field effect transistor (4) source electrode enters amplifier (10), when sampled signal during greater than predetermined value, amplifier (10) makes binary pair (9) upset, its mouth is put 1, by diode low frequency oscillator (3) is resetted and stop output, field effect transistor (4) is turned off.
RC link between binary pair (9) mouth and time base circuit (8) the reset terminal R makes time base circuit (8) be resetted by the short time when rigidly connecting energize, to guarantee circuit overcurrent protection (6) reliable operation.
When load (7) when being steering indicating light, the oscillation frequency of low frequency oscillator (3) is lower; When load (7) when being loudspeaker, the latter's oscillation frequency is higher relatively.
The structure of this embodiment controller is seen shown in Figure 3, the scheme drawing that profile that wherein last figure is this controller and exit thereof connect with automobile power source (1) and load (7); Figure below is the scheme drawing of inner structure.For making full use of the inner space, circuit component is installed in respectively on three circuit cards (14), (15), (16).Wherein (14) constitute insulating power supply (2); (15) comprise low frequency oscillator (3), circuit overcurrent protection (6) in; (16) go up by dress exit copper sheet and field effect transistor (4) and sample resistance (5).Circuit card (16) welds with circuit card (14), (15) respectively, and entire circuit is joined together.
Claims (4)
1, the discontinuous power supply controller in a kind of automobile circuit.It is between the automobile power source (1) and load (7) that negative pole connects car body, and this controller comprises: be connected on the on-off element (4) in the load current loop, be used to be switched on or switched off load current loop; Low frequency oscillator (3), it is connected with on-off element (4), is used to make on-off element (4) periodically to open or turn-off, and it is characterized in that:
On-off element (4) is N slot field-effect transistor (4), its drain electrode is connected with automobile power source (1) positive pole, its source class is connected with an end and the low frequency oscillator (3) of load (7), load current through field effect transister (4) drain-to-source, constitutes the loop through overload (7) to car body from the positive pole of automobile power source (1) again;
This controller comprises insulating power supply (2), is used for to low frequency oscillator (3) power supply, and the input end of this power supply (2) is connected with automobile power source (1), and mouth is connected with low frequency oscillator (3) and field effect transister (4);
This controller also comprises circuit overcurrent protection (6), and this circuit (6) is equally by insulating power supply (2) power supply, and when load current during greater than predetermined value, this circuit (6) sends control signal and turn-offs field effect transister (4).
2, the discontinuous power supply controller in the automobile circuit according to claim 1 is characterized in that: insulating power supply (2) mainly is made of transistor (11), oscillation transformer (12), rectifier (13); Insulation is isolated between the primary and secondary coil of oscillation transformer (12), transistor (11) and oscillation transformer (12) are elementary to be connected with automobile power source (1), and the secondary and rectifier (13) of oscillation transformer (12) is connected with low frequency oscillator (3) and field effect transister (4).
3, the discontinuous power supply controller in the automobile circuit according to claim 1 is characterized in that: circuit overcurrent protection (6) is connected with low frequency oscillator (3), and it sends the signal that field effect transister (4) is turn-offed to low frequency oscillator (3).
4, the discontinuous power supply controller in the automobile circuit according to claim 3 is characterized in that: circuit overcurrent protection (6) is made of sampled signal amplifier (10) and binary pair (9); Binary pair (9) mouth is connected with low frequency oscillator (3) reset terminal, field effect transister (4) source electrode is connected with sample resistance (5) and sampled signal amplifier (10) input end, when load current during greater than predetermined value, pulse enable signal binary pair (9) mouth of signal amplifier (10) output is put 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93226712 CN2191129Y (en) | 1993-12-14 | 1993-12-14 | Interrupted electricity supply controller for automobile circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93226712 CN2191129Y (en) | 1993-12-14 | 1993-12-14 | Interrupted electricity supply controller for automobile circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2191129Y true CN2191129Y (en) | 1995-03-08 |
Family
ID=33804270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93226712 Expired - Fee Related CN2191129Y (en) | 1993-12-14 | 1993-12-14 | Interrupted electricity supply controller for automobile circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2191129Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545182A (en) * | 2010-10-22 | 2012-07-04 | 通用电气航空系统有限公司 | Power controller system |
| CN103231700A (en) * | 2013-05-16 | 2013-08-07 | 南京浦镇海泰制动设备有限公司 | Anti-slide valve power supply control circuit of high speed train |
-
1993
- 1993-12-14 CN CN 93226712 patent/CN2191129Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545182A (en) * | 2010-10-22 | 2012-07-04 | 通用电气航空系统有限公司 | Power controller system |
| US9118177B2 (en) | 2010-10-22 | 2015-08-25 | Ge Aviation Systems, Llc | Power controller system |
| CN102545182B (en) * | 2010-10-22 | 2016-05-04 | 通用电气航空系统有限公司 | Power controller system |
| CN103231700A (en) * | 2013-05-16 | 2013-08-07 | 南京浦镇海泰制动设备有限公司 | Anti-slide valve power supply control circuit of high speed train |
| CN103231700B (en) * | 2013-05-16 | 2015-03-04 | 南京浦镇海泰制动设备有限公司 | Anti-slide valve power supply control circuit of high speed train |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |