LED circuits always play an important role in daily life applications in many ways.It attracts Electronic hobbyist interest since it was easy, simple to implement and cost effective too.This was a simple LED christmas lights using Transistor in astable mode.Lets…
Read more
This was a simple power failure alarm circuit and it can be widely used where indication during power failure was required. Most of the power supply failure alarm circuits requires a individual power supply for themselves in order to make…
Read more
The increase in power demands in our life has made inverter necessary so why cant you do one instead of buying it.today this circuit will will teach you how to do your own inverter using transistors .Lets quickly move into…
Read more
This is the circuit diagram of a simple electronic combination lock using IC LS 7220.This circuit uses a relay for controlling any type of device when the combinations of four digits are pressed.Keypads are used as input here to enter…
Read more
This electronic circuit is one of the simplest code lock circuit one can make easily in their home.This circuit uses one transistor a relay and a few passive components in it.The logic of this circuit is also very simple.Even this…
Read more
This is a simple light sensor circuit diagram which activates a relay when Light incident on sensor is above threshold.This circuit cost less. It comprises of a transistor, potentiometer, LDR(Light Dependent Resistor) and a relay with a protection diode. WORKING…
Read more
We have seen many alarm circuits but Fire alarm was one of the most important among all. In many buildings,industries and houses fire alarm circuit have been installed in order to alert people them in case of a fire break…
Read more