4-1 is simple to build and can save the car owner the frustration of a rundown battery when the car is parked with its lights left on. ... The power supply/ decoupler section furnishes 5 V of regulated dc to the sounder circuit. The power supply also decouples the ... This, in turn, makes the piezo buzzer beep. The tone To Lightsanbsp;...
|Title||:||Electronics and microcomputer circuits|
|Author||:||Roger L. Tokheim|
|Publisher||:||Computing McGraw-Hill - 1985|