System for vehicle safety devices

摘要

In a vehicle safety system having a warning buzzer an inductance element of the buzzer is also used as a coil element for stepping up voltage in a voltage step-up circuit of an energy reservoir in which the electric energy required for actuating an electrically fired actuator of a safety device is stored in a capacitor of large capacity. The voltage step-up circuit is adapted to produce a high output voltage in response to the application of an appropriate ON/OFF signal. In the case where it is detected that an abnormal condition has arisen in the system, a signal having an audible frequency component is applied to the voltage step-up circuit, whereby the buzzer operates to generate a warning sound.