Switching Circuits

Frost Alarm
Dark Activated Switch
Electronic Keypad
Light Detector Circuit
DC Motor Control Circuit
PBS Switch Debouncing Circuit
Remote Doorbell Warning Switch
Electronic Doorbell with Counter
Digital Combination Lock
Electronic Night Light
Sound Operated Switch
Voltage Comparator Switch
DC Motor Reversing Circuit
Voltage Controlled Switch using 555 Timer
Keypad Switch No.2
Electronic Door Release
Intelligent switch
Heat-Sensitive Switch
Washing Machine Motor Controller
Voltage-Based Controller For Switches
Automated Traffic Signal Controller
Automatic Switch For Audio Power Amplifier
Automatic Headlight Brightness Switch
Load Sensing Auto Switch
Solid State Switch for DC Operated Gadgets