This is an old or “very old” schematic diagram of birdie tone or sound generator. Then, the bird sound circuit used to be a home […]

Here is the 200W MOSFET amplifier powered based on four piece of IRFP250N, they are very cheap and easy to find in the electronic market […]

This is a very interesting circuit design to assemble. There are 4in1 amplifier module in a circuit board. 100W power amplifier using the TDA7294, for […]

This is 120W power amplifier schematic using TO-3 package complementary transistors, NPN and PNP polarity. The well-known power transistor pair of 2N3055 and MJ2955 used […]

Here is the circuit diagram and PCB design for relatively low cost DIY bass guitar preamp pedal uses FET K117 or equivalent. There is a […]

This is a 200W power amplifier circuit project. The circuit features high power, good definition and very low noise. It delivers about 200 watts in […]