IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0560447
(2009-09-16)
|
등록번호 |
US-8149563
(2012-04-03)
|
우선권정보 |
CN-2009 1 0306649 (2009-09-07) |
발명자
/ 주소 |
|
출원인 / 주소 |
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
3 |
초록
▼
An ignition circuit includes a system power supply, an ignition coil, a delay unit, a first switch unit, and a second switch unit. When the system power supply is powered on, the second switch unit is turned on, the ignition coil is powered on. After a delay time, the delay unit controls the first s
An ignition circuit includes a system power supply, an ignition coil, a delay unit, a first switch unit, and a second switch unit. When the system power supply is powered on, the second switch unit is turned on, the ignition coil is powered on. After a delay time, the delay unit controls the first switch unit to be turned on, the second switch unit is turned off, the ignition coil is powered off. Therefore an ignition operation is accomplished.
대표청구항
▼
1. An ignition circuit, comprising: an ignition coil comprising a first terminal connected to a positive terminal of a system power supply, and a second terminal;a delay unit;a first switch unit comprising a first terminal connected to the positive terminal of the system power supply, a second termi
1. An ignition circuit, comprising: an ignition coil comprising a first terminal connected to a positive terminal of a system power supply, and a second terminal;a delay unit;a first switch unit comprising a first terminal connected to the positive terminal of the system power supply, a second terminal connected to ground, and a control terminal connected to the positive terminal of the system power supply via the delay unit; anda second switch unit connected in series with the ignition coil, wherein the second switch unit comprises a first terminal connected to the second terminal of the ignition coil, a second terminal connected to ground, and a control terminal connected to the first terminal of the first switch unit;wherein the second switch unit is turned on in response to the system power supply being powered on, thereby the ignition coil is powered on, then the delay unit controls the first switch unit to be turned on after a delay time, the second switch unit is thus turned off, thereby the ignition coil is powered off. 2. The ignition circuit of claim 1, further comprising a diode, a cathode of the diode is connected to the first terminal of the ignition coil, an anode of the diode is connected to the second terminal of the ignition coil. 3. The ignition circuit of claim 1, wherein the delay unit comprises a first resistor and a capacitor, the system power supply is connected to a positive terminal of the capacitor and the control terminal of the first switch unit via the first resistor, a negative terminal of the capacitor is grounded. 4. The ignition circuit of claim 3, wherein the first switch unit comprises a first npn transistor, a base of the first npn transistor functioning as the control terminal of the first switch unit is connected to a node between the first resistor and the capacitor via a second resistor, a collector of the first npn transistor is connected to the system power supply via a third resistor and connected to the control terminal of the second switch unit via a fourth resistor, an emitter of the first npn transistor is grounded. 5. The ignition circuit of claim 4, wherein the second switch unit comprises a thyristor, a control terminal of the thyristor functioning as the control terminal of the second switch unit is connected to the collector of the first npn transistor via the fourth resistor, a cathode of the thyristor is grounded, an anode of the thyristor is connected to the second terminal of the ignition coil. 6. The ignition circuit of claim 4, wherein the second switch unit comprises a second npn transistor, a base of the second npn transistor functioning as the control terminal of the second switch unit is connected to the collector of the first npn transistor via the fourth resistor, an emitter of the second npn transistor is grounded, a collector of the second npn transistor is connected to the second terminal of the ignition coil. 7. The ignition circuit of claim 3, wherein the first switch unit comprises a pnp transistor, a base of the pnp transistor functioning as the control terminal of the first switch unit is connected to a node between the first resistor and the capacitor, an emitter of the pnp transistor is connected to the system power supply, a collector of the pnp transistor is connected to the control terminal of the second switch unit via a third resistor. 8. The ignition circuit of claim 7, wherein the second switch unit comprises a thyristor, a control terminal of the thyristor functioning as the control terminal of the second switch unit is connected to the collector of the pnp transistor, a cathode of the thyristor is grounded, an anode of the thyristor is connected to the second terminal of the ignition coil.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.