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Automatic Temperature Controlled Fan
Here is a circuit through which the speed of a fan can be linearly controlled automatically, depending on the room temperature. This temperature controlled...
Operational Amplifier Gain And DC Offset Program
Presented here is a program to find the gain and DC offset values of an operational amplifier (or op-amp). While doing practical electronics experiments,...
12V Battery Charger-cum-Variable Power Supply
The 12v battery charger-cum-variable power supply circuit presented here can charge a 12V lead-acid battery of 50Ah to 80Ah (even up to 100Ah) capacity...
LED As Light Sensor
Usually light dependent resistors (LDR) and photodiodes are used as light sensors to activate or deactivate circuits based on the presence or absence of...
Brake Failure Indicator
Do you want to get an early warning of brake failure while driving? Here is a brake failure indicator circuit that constantly monitors the...
Smoke, Alcohol, and LPG-Detection Alarm
Presented here is a circuit for raising an alarm on detecting smoke or LPG cooking gas leakage, or even alcohol vapours in breath. This...
Optical Smoke Alarm
An optical smoke alarm (also called photo-electric smoke alarm) works using the light scatter principle. The alarm contains a pulsed Infra red LED which...
Solve Electrical Circuits With Solve Elec
Solve Elec, as the name says, is a software that makes the task of dealing with electrical designs a lot easier. Right from the...
Low Cost High Impedance Buffers for Oscilloscopes and Voltmeters
Most of the low cost digital oscilloscopes and voltmeters have input resistance around 1 MOhm and input capacitance around 100pF. But in many case...
Bipolar Power Supply with LM317T and with LM337T Controllable with Stereo Potentiometer
LM317T and LM337T are well known and low cost adjustable voltage regulators with current limiting up to around 1.5A and power dissipation up to...
