JPH0313709U

JPH0313709U -

Info

Publication number: JPH0313709U
Application number: JP7473389U
Authority: JP
Priority date: 1989-06-26
Filing date: 1989-06-26
Publication date: 1991-02-12

Description

[Brief explanation of the drawing]

第１図は本考案に係わるソレノイド駆動回路で
ある。図に於いてブロツク１はＰＷＭ回路でＲ_１〜Ｒ
_９は抵抗、Ｃ_１はコンデンサ、ＩＣ_１〜ＩＣ_２は
コンパレータ、イはＰＷＭ出力端、ブロツク２は
入力指令回路でＲ_１０〜Ｒ_１５は抵抗、Ｑ_１〜Ｑ
_２はトランジスタ、ロは入力指令出力端、ブロツ
ク３はタイマー回路で、Ｒ_１６は抵抗、Ｃ_２はコ
ンデンサ、ＩＣ_１〜ＩＣ_２はインバータＩＣ、ハ
はタイマーパルス出力端、ブロツク４は出力回路
でＲ_１７〜Ｒ_２７は抵抗、Ｑ_３〜Ｑ_７はトランジ
スタ、Ｄ_１，Ｄ_３はダイオード、Ｄ_２はツエナー
ダイオード、負荷Ｓはソレノイドである。 FIG. 1 shows a solenoid drive circuit according to the present invention. In the figure, block 1 is a PWM circuit with R ₁ to R
₉ is a resistor, _C1 is a capacitor, _IC1 to _IC2 are comparators, A is a PWM output terminal, block 2 is an input command circuit, _R10 to _R15 are resistors, _Q1 to Q
₂ is a transistor, B is an input command output terminal, block 3 is a timer circuit, _R16 is a resistor, _C2 is a capacitor, _IC1 to _IC2 are inverter ICs, C is a timer pulse output terminal, and block 4 is an output circuit. R ₁₇ to R ₂₇ are resistors, Q ₃ to _{Q 7} are transistors, D ₁ and D ₃ are diodes, D ₂ is a Zener diode, and the load S is a solenoid.

Claims

[Claims for Utility Model Registration] (1) A control circuit for a first switching element formed by OR-connecting a PWM generation circuit and a timer pulse circuit synchronized with a command input signal, and a second switching element driven by the command input signal. A solenoid drive circuit consisting of a switching element control circuit configured with an AND connection. (2) Load, flywheel diode, and the first
Or the utility model registration claim No. (1) characterized in that the second switching element is connected in series.
Solenoid drive circuit described in section.