Thyristor circuit arrangement, especially for periodically switching-in and switching-out a load专利检索-浪涌电流电流电路专利检索查询-专利查询网

Thyristor circuit arrangement, especially for periodically switching-in and switching-out a load

阅读：266发布：2023-12-19

专利汇可以提供Thyristor circuit arrangement, especially for periodically switching-in and switching-out a load专利检索，专利查询，专利分析的服务。并且A thyristor circuit arrangement, especially for periodically switching-in and switching-out a load, comprising a thyristor including a control electrode and an ignition circuit electrically coupled with such control electrode. The circuit embodies a control transmitter-switch means capable of being switched into a first and second switching state for controlling the ignition sequence, and upon switching of such control transmitter switch means from its first switching state into its second switching state the thyristor fires. The invention contemplates that the ignition circuit embodies an ignition capacitor electrically coupled with the control electrode of the thyristor in order to fire such thyristor by means of a charging current surge. The ignition capacitor can be connected for charging, by means of an auxiliary control circuit and electronic switch means electrically coupled with said auxiliary control circuit, with a charging voltage source, and for discharging can be connected with a discharge circuit. The control transmitterswitch means controls the auxiliary control circuit and the discharge circuit, so that during switching of such control transmitter-switch means from its first switching state into its second switching state the electronic switch means is switched-in with the discharge circuit open, and in its first switching state closes said discharge circuit.，下面是Thyristor circuit arrangement, especially for periodically switching-in and switching-out a load专利的具体信息内容。

权利要求

1. A thyristor circuit arrangement, especially for periodically switching-in and switching-out a load, comprising a thyristor including a control electrode, an ignition circuit electrically coupled with said control electrode of said thyristor, a control transmitter-switch means capable of being switched into first and second switching states for controlling the ignition sequence, said control transmitter-switch means when switched from its first switching state into its second switching state causing firing of said thyristor, said ignition circuit incorporating an ignition capacitor electrically coupled with said control electrode of said thyristor in order to fire said thyristor by means of a charging current surge, auxiliary control circuit means including a resistor and a capacitor which define a timing circuit and electronic switch means electrically coupled with said auxiliary control circuit means, means defining a charging voltage source, said ignition capacitor being electrically connected in series with said electronic switch means for charging by means of said electronic switch means coupled with said auxiliary control circuit with said charging voltage source, means defining a discharge circuit, said ignition capacitor being connectible with said discharge circuit for discharge thereof, said control transmitter-switch means controlling said auxiliary control circuit means and said discharge circuit such that at a given time after switching of said control transmitter-switch means from its first switching state into its second switching state said electronic switch means is turned-on with the discharge circuit open and such that said control-transmitter switch means in its first switchIng state closes said discharge circuit.

2. The circuit arrangement as defined in claim 1, wherein said electronic switch means comprises control thyristor means, and wherein said auxiliary control circuit means provides an auxiliary ignition circuit for said control thyristor means.

3. The circuit arrangement as defined in claim 2, wherein said control thyristor means includes an anode, control electrode and cathode, said auxiliary ignition circuit for said control thyristor means defining said electronic switch means incorporating voltage divider means connected parallel to its switching path, said voltage divider means comprising a first resistor which connects said control electrode of said control thyristor means with its cathode, a direct-current voltage source, and a second resistor of said voltage divider means coupled with one pole of said direct-current source.

4. The circuit arrangement as defined in claim 1, wherein said discharge circuit comprises at least one resistor having a resistance value which extends the discharge time of said ignition capacitor over a time-span during which said control transmitter switch means switches without chatter.

5. The circuit arrangement as defined in claim 3, wherein said voltage divider means of said auxiliary ignition circuit forms part of said discharge circuit for said ignition capacitor, said voltage divider means being connected via said control transmitter-switch means with the other pole of said direct-current source, and blocking diode means for forming a charging circuit for said ignition capacitor during the second switching state of said control transmitter switch means, upon charging of said ignition capacitor firing said control thyristor means and when said ignition capacitor is charged blocking said control thyristor means, and for freeing said discharge circuit when said control transmitter-switch means assumes its first switching state.

6. The circuit arrangement as defined in claim 1, wherein said means defining a charging voltage source for charging said ignition capacitor comprises a charging capacitor, and an auxiliary voltage source for charging said last-mentioned charging capacitor.

7. The circuit arrangement as defined in claim 5, wherein said means defining a charging voltage source for charging said ignition capacitor comprises a charging capacitor, and an auxiliary voltage source for charging said last-mentioned charging capacitor and wherein said charging capacitor can be charged by said auxiliary voltage source to a higher voltage than the voltage of said direct-current source.

8. A circuit arrangement as defined in claim 7, particularly for use in an electronic ignition device for internal combustion engines in which there is provided a storage capacitor, a charging transformer including a primary winding and a secondary winding, a charging rectifier means, said storage capacitor being charged via said secondary winding of said charging transformer and said charging rectifier means, an ignition transformer having a primary and second winding, said storage capacitor discharging through said primary winding of said ignition transformer, a transistor circuit arrangement including feedback means for controlling the current flow through said primary winding of said charging transformer, said thyristor being connected in parallel with said storage capacitor in order to control discharge thereof, said auxiliary voltage source for said charging capacitor comprising said primary winding of said charging transformer, and wherein a terminal of said charging capacitor coupled with said electronic switch means is connected via a diode with one end of said primary winding of said charging transformer.

9. The circuit arrangement as defined in claim 8, wherein said charging capacitor can be charged by means of said primary winding of said charging transformer to 40 volts and said ignition capacitor can be charged by said charging capacitor to 30 volts.

说明书全文

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Thyristor circuit arrangement, especially for periodically switching-in and switching-out a load

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