| 摘要 |
<p>PURPOSE:To prevent a motor lock current in spite of simultaneous treading of an accelerator pedal and a brake pedal by a brake switch being installed in parallel connection with an accelerator switch. CONSTITUTION:Trigger pulses SP which have an periodicity in accordance with an output voltage VA from an accelerator circuit 8 is given to a gate terminal of a thyristor 10 by an oscillator 9. As oscillation suspension circuit 14 is activated when an accelerator switch 15 which is switched on if an accelerator pedal is not trod or a brake switch 16 which is switched on if a brake pedal is trod is switched on, and a gate terminal of a thyristor 10 is grounded. By this arrangement a motor lock current does not flow in spite of simultaneous treading of the accelerator pedal and the brake pedal and therefore main fuse can not be cut.</p> |
