Digital Audio Volume Control Circuit using PT2258 IC and Arduino
A potentiometer is a mechanical device using which one can set the resistance according to the desired value, thus changing the...
Amplifier
Programmable Gain Amplifier using MOSFET and Transistor
In the measurement industry, a very crucial functional block is a Programmable Gain Amplifier (PGA). If you are an electronic...
High Power High Efficiency Buck Converter Circuit using TL494
A buck converter (step-down converter) is a DC-to-DC switching converter that steps down voltage while maintaining a constant...
Simple 2x32 Watt Audio Amplifier with TDA2050
If you are thinking about building a simple, cheap, and moderately high power amplifier circuit that can deliver up to 50-watt...
Superheterodyne AM Receiver - Working with Block Diagram and Schematics
A superheterodyne receiver uses signal mixing to convert the input radio signal into a steady intermediate frequency (IF) that...
Arduino Based FM Radio using RDA5807
Today almost everyone uses their mobile phones to listen to music, news, podcasts, etc. But not long ago we were all depending...
12V Audio Power Amplifier using TIP35C – Class A Amplifier
Loudspeakers are heavy loads, and they normally require high current to be driven which is provided by an external circuit....
Biasing Methods of Class A BJT Amplifiers
When you want to design bipolar transistor circuits you need to know how to bias them. Biasing is applying electricity to a...
How to build an Analog Mixer - Additive Mixer and Multiplicative Mixer
A mixer is a special type of electronic circuit that combines two signals (periodically repeating waveforms). Mixers find a lot of use in audio...
Howland Current Pump Circuit
The simple current source is not perfect for variable loads as the current through load also changes with the load resistance....
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