Explore the collection of simple and mini electronic projects with their proper schematic or circuit diagrams. These circuits are DIY (Do It Yourself) and verified for students, beginners, hobbyist, etc.
The circuit will automatically cut the power supply if the voltage if not proper or
it is less as required by an electrical appliance.
Here’s a simple and low-cost automatic street light. This switch automatically turns on the light at
Sunset and turns it off at sunrise. The automatic function saves electricity besides man-power.
In this circuit is sound is amplified which is done by using transistors and conversion of sound to electrical energy which is achieved
by using a MIC. The amplification done by circuit is finally used to glow the LED.
This direction indicator arrow is used to indicate the direction of toilet or
something else. Sometimes when the gathering in a party is large and the guest are unable to find the toilets, food courts
or sweet corner etc.
A Electronic dice uses LED for counting the number.This Dice consists of IC
555 timer and IC 4017 Decoded Decade Counter.
Here, an IC based fire alarm is described. Which is made to sense fire or
basically heat at any place. It uses IC 555(timer) and germanium Diode as a heat sensor.
Multi tone bell is a call bell. It saves up and down trips by distinguishing
between calls made from the front door or a side entrance.
Supply failure are very common now days.This circuit indicates power
failure by glowing LED. Some of the digital appliances need a continuous power supply to ensure correct operation.
Sequence generator uses two different IC-4017 decade counter and IC-555.The CD4017 act as LED driver in 10 output, by LED will glow only one in a rapid sequence.
When the circuit is switched on, IC 555 timer starts timing. The green LED lights
to show that timing is in progress. When the time period is over the green LED turns OFF, the red LED turns ON and the buzzer sounds.
The touch alarm described in this project is a wonderful electronic device.
when you just touch a copper plate peculiar sounds are produced.This can be used At many place for theft protection.