This circuit was found in a 90s Hands-on Electronics. The transistor can be a BC548. What it does is warn the driver who turns off the car and leaves the lights on. The sonalert is a buzzer with an integrated oscillator.
This circuit was found in a 90s Hands-on Electronics. The transistor can be a BC548. What it does is warn the driver who turns off the car and leaves the lights on. The sonalert is a buzzer with an integrated oscillator.