JPH0380691U

JPH0380691U -

Info

Publication number: JPH0380691U
Application number: JP13934189U
Authority: JP
Priority date: 1989-12-02
Filing date: 1989-12-02
Publication date: 1991-08-19

Description

[Brief explanation of drawings]

第１図、第３図〜第５図はそれぞれ本考案の１
実施例を示す回路図、第２図は従来技術を示す回
路図、である。符号の説明、１９…整流器、２１…発振器、２
３…パワー・ツエナー・ダイオード、２８…点火
コイル、２９，３０…接続端子。 Figures 1 and 3 to 5 are each one of the parts of the present invention.
FIG. 2 is a circuit diagram showing an embodiment, and FIG. 2 is a circuit diagram showing a conventional technique. Explanation of symbols, 19... Rectifier, 21... Oscillator, 2
3...Power Zener diode, 28...Ignition coil, 29,30...Connection terminal.

Claims

[Claims for Utility Model Registration] (1) A pair of arms are connected in parallel to a first DC power supply,
Two non-controllable switches are connected in series in opposite directions with respect to the power supply voltage between both power supply terminals, a capacitor is connected in parallel to at least one of the non-controllable switches, and the non-controllable switches are connected. In a series inverter circuit in which an AC switch and a coil are connected in series between the point and the midpoint terminal of the pair of arms, the forward bias voltage is positive and the normally
There are two voltage-driven one-way controllable two-way switches in the OFF state, and a switch whose control terminals are connected to each other and their first main terminals which also serve as drive terminals is used as the AC switch, A current path through which current flows in only one direction is provided from the negative power terminal to the first main terminal, and a switching device for controlling on/off of the AC switch is provided between the control terminal and the negative power terminal. a negative power terminal of the second DC power source is connected to the negative power terminal, and a current limiting means for limiting the magnitude of the current is connected between the positive power terminal and the control terminal. Characteristic AC switch drive circuit. (2) The AC switch drive circuit according to claim 1, wherein the first and second DC power supplies are common. (3) Connect the arm pair in parallel to the first DC power supply,
Two non-controllable switches are connected in series in opposite directions with respect to the power supply voltage between the two power supply terminals, a capacitor is connected in parallel to at least one of the non-controllable switches, and both of the non-controllable switches are connected in parallel. In a series inverter circuit in which an AC switch and a coil are connected in series between the connection point and the midpoint terminal of the pair of arms, there are two unidirectionally controllable 2 voltage-driven voltage-driven inverters whose forward bias voltage is negative, and which are normally off. A directional switch is provided, and a switch in which these control terminals and these first main terminals that also serve as drive terminals are connected is used as the AC switch, and a direction is directed from the first main terminal to the positive power terminal. A current path through which current flows in only one direction is provided, a switching means for controlling ON/OFF of the AC switch is connected between the positive power terminal and the control terminal, and a second switch is connected to the positive power terminal. 1. A drive circuit for an AC switch, characterized in that a positive power terminal of a DC power source is connected, and a current limiting means for limiting the magnitude of current is connected between the control terminal and the negative power terminal thereof. (4) The AC switch drive circuit according to claim 3, wherein the first and second DC power sources are common. (5) Connect the arm pair in parallel to the first DC power supply,
Two non-controllable switches are connected in series in opposite directions with respect to the power supply voltage between the two power supply terminals, a capacitor is connected in parallel to at least one of the non-controllable switches, and both of the non-controllable switches are connected in parallel. In a series inverter circuit in which an AC switch and a coil are connected in series between the connection point and the midpoint terminal of the pair of arms, the forward bias voltage is positive and the normally
When there is a voltage-driven switching means in the OFF state, and its control terminal and its first main terminal form a pair for driving signal input, a rectifier circuit in which four non-controllable switches are bridge-connected and the voltage A switch combined with a driving type switching means is used as the AC switch, and a current path is provided that allows current to flow in only one direction from the negative power terminal to the first main terminal, and the control terminal and the negative power source are connected to each other. A switching means for controlling ON/OFF of the AC switch is connected between the terminals, a negative power terminal of a second DC power source is connected to the negative power terminal, and a switching means is connected between the positive power terminal and the control terminal. 1. A drive circuit for an AC switch, characterized in that a current limiting means for limiting the magnitude of current is connected. (6) The AC switch drive circuit according to claim 5, wherein the first and second DC power sources are common. (7) Connect the arm pair in parallel to the first DC power supply,
Two non-controllable switches are connected in series in opposite directions with respect to the power supply voltage between the two power supply terminals, a capacitor is connected in parallel to at least one of the non-controllable switches, and both of the non-controllable switches are connected in parallel. In a series inverter circuit in which an AC switch and a coil are connected in series between a connection point and a midpoint terminal of the pair of arms, there is a voltage-driven switching means whose forward bias voltage is negative and which is normally off.
When the control terminal and the first main terminal form a pair for inputting a drive signal, the switch that combines the rectifier circuit in which four non-controllable switches are bridge-connected and the voltage-driven switching means is connected to the AC switch. A current path that allows current to flow in only one direction from the first main terminal to the positive power terminal is provided between the positive power terminal and the control terminal, and the AC switch is turned on and off between the positive power terminal and the control terminal. a current limiting means that connects a switching means for controlling the current, connects a positive power terminal of a second DC power source to the positive power terminal, and limits the magnitude of the current between the control terminal and its negative power terminal; A drive circuit for an AC switch, characterized in that the AC switch is connected to the AC switch. (8) The AC switch drive circuit according to claim 7, wherein the first and second DC power supplies are common.