JPH0178431U

JPH0178431U -

Info

Publication number: JPH0178431U
Application number: JP1987175303U
Authority: JP
Priority date: 1987-11-17
Filing date: 1987-11-17
Publication date: 1989-05-26

Description

[Brief explanation of the drawing]

第１図は本考案の電界効果トランジスタ用駆動
回路の回路図、第２図は従来の電界効果トランジ
スタ用駆動回路の回路図である。１……スイツチング用の電界効果トランジスタ
、２……パルストランス、３……第１のスイツチ
、４……第２のスイツチ、６……放電用の電界効
果トランジスタ。 FIG. 1 is a circuit diagram of a field effect transistor drive circuit according to the present invention, and FIG. 2 is a circuit diagram of a conventional field effect transistor drive circuit. 1... Field effect transistor for switching, 2... Pulse transformer, 3... First switch, 4... Second switch, 6... Field effect transistor for discharging.

Claims

[Scope of utility model registration request]

It has a pulse transformer that insulates a field effect transistor for switching and a pulse width control circuit, and has a first switch connected in series to the primary winding of the pulse transformer, and a second switch connected in parallel to the primary winding. a first switch is turned on to turn on the switching field effect transistor, and the first switch is turned off and a second switch is turned on to turn off the switching field effect transistor. In the field-effect transistor drive circuit, a discharge field-effect transistor having conductivity opposite to that of the switching field-effect transistor is connected between the gate and source of the switching field-effect transistor, and the second switch is turned on. A drive circuit for a field effect transistor, characterized in that the field effect transistor for discharging is turned on by turning on the field effect transistor.