Recent posts
How to build Security Door electronic Key
How to build Security Door electronic Key
Circuit Description It is a relatively simple circuit of electronic lock of safety…
How to build Two-Zone Burglar Alarm
How to build Two-Zone Burglar Alarm
Descrition This is a two-zone alarm - with automatic exit, entry and siren cut…
How to build Personal alarm
How to build Personal alarm
Small, portable, anti-bag-snatching unit Also suitable for doors and windows control Cir…
How to build Door Alarm
How to build Door Alarm
Hangs up on the door-handle Beeps when someone touches the door-handle from outside …
How to build Emergency Light and Alarm
How to build Emergency Light & Alarm
Warning! The circuit is connected to 220Vac mains, then some parts in the circuit board ar…
Light Emitting Diode How it Works?
Light Emitting Diode How it Works?
LEDs form an inevitable part in the modern electronics as simple indicators to optical com…
White LED Flood Lamp Circuit
White LED Flood Lamp Circuit
Ultra White LED Lamps are now replacing the fluorescent lamps due to its energy saving property …
