Light Fence circuit
This circuit can be used for security purpose, by implementing light fence at the entrance gate or entry door we …
Variable LED flasher
This is single IC LM3909 variable LED flasher circuit, and it needs only 1.5 volts for operation, we can vary the …
Simple FM transmitter
Frequency Modulation reaches several meters to kilo meter with low power transmitter circuit. Here two transistor based FM circuit diagram …