JPH0419827U

JPH0419827U -

Info

Publication number: JPH0419827U
Application number: JP5752490U
Authority: JP
Priority date: 1990-05-31
Filing date: 1990-05-31
Publication date: 1992-02-19

Description

[Brief explanation of the drawing]

第１図はトランジスタのｔｓの温度特性のグラ
フである。第２図はトリガ電流のピーク値に対す
るｔｓの変化をグラフに示したものである。第３
図は本考案の第１の実施例である。第４図は本考
案の第２の実施例である。第５図は本考案の第３
の実施例である。第３図、第４図及び第５図にお
いて、１１はトランジスタ、１２はトリガ電流発
生器である。第３図の１３は正温度係数抵抗器で
ある。第４図及び第５図の１４は負の温度係数を
もつ温度補償用サーミスタ、１５は抵抗器である
。第５図の１６はトランジスタ、１７は抵抗器、
１８は抵抗器である。 FIG. 1 is a graph of the temperature characteristics of ts of a transistor. FIG. 2 is a graph showing the change in ts with respect to the peak value of the trigger current. Third
The figure shows a first embodiment of the present invention. FIG. 4 shows a second embodiment of the present invention. Figure 5 shows the third part of this invention.
This is an example. In FIGS. 3, 4, and 5, 11 is a transistor, and 12 is a trigger current generator. 13 in FIG. 3 is a positive temperature coefficient resistor. In FIGS. 4 and 5, 14 is a temperature compensation thermistor having a negative temperature coefficient, and 15 is a resistor. 16 in FIG. 5 is a transistor, 17 is a resistor,
18 is a resistor.

Claims

[Claims for Utility Model Registration] (1) A trigger current generator; a transistor that is switched on by the trigger current generator; and a transistor connected in series between the trigger current generator and the transistor; and a positive temperature coefficient resistor arranged to be thermally well-coupled with the temperature of the trigger current so that the trigger current decreases as the temperature of the transistor increases. Compensation circuit. (2) a trigger current generator; a transistor that is switched on by the trigger current; a resistor connected in series between the trigger current generator and the transistor; and a portion of the current flowing through the resistor. and a temperature-compensating thermistor connected to shunt the current and thermally coupled to the transistor, thereby reducing the trigger current flowing to the transistor in response to a rise in the temperature of the transistor. A temperature compensation circuit for the trigger current that operates so that the current decreases. (3) In the trigger current temperature compensation circuit according to claim (2), a current amplifier for amplifying the current shunted to the temperature compensation thermistor is added, thereby suppressing the temperature increase of the transistor. On the other hand, a trigger current temperature compensation circuit operates so that the trigger current decreases.