Using Op-Amp

The non-inverting amplifier is one of the most popular op-amp circuits similar to the op-amp inverting amplifier circuit. It provides a gain to the input signal without any change in the polarity. If a sine wave is fed to the input of this op-amp noninverting amplifier, the output will be an amplified sine wave with zero phase shift. Here the input is … [Read more...] about Op Amp 741 Non Inverting Amplifier Circuit With Simulated Waveform

Most often, you may need a lead-acid battery voltage level monitoring circuit. Here is an example; if you use the lead-acid battery for my inverter and so it requires constant voltage charging. But the inverter provides current charging only, so you may use a self-made battery charger circuit that provides a constant 14-volt charging. Charger output should be … [Read more...] about 12v Led Battery Level Indicator Circuit (Led Bar Graph)

A remote control system for appliances makes our life smarter and easier. The wireless remote control circuit may be based on IR waves or RF waves, IR being cheaper. An IR emitter circuit is based on TSOP at the receiver section. Each TSOP operates at a particular frequency which depends on a number present on it. So each TSOP requires a specific remote controller for … [Read more...] about IR Transmitter and Receiver Circuit for Best Remote Control System

This is a simple automatic temperature-controlled fan circuit using an NTC thermistor. The main components of this temp control fan circuit are a negative temperature coefficient thermistor (NTC) which detects the temperature, a comparator which is used to compare the preset temperature value, and a relay circuit to drive the fan. The power supply … [Read more...] about Automatic Temperature Controlled Fan Circuit Using Thermistor