Tasel

TDA7294, monolithic IC with output up to 100W as main core for this useful audio amplifier. This circuit is a mono for a single channel in 4Ω or 8Ω load. Simple audio class A-B amplifier.

Based on three characteristics: good quality sound, easy to make, and not expensive circuit, this TOSHIBA DX is worth to try. Just need 36VDC voltage input as a fuel, the circuit can produce 100W output on 40 Ohm speaker or 50W on 80 Ohm, using a pair of TOSHIBA A1943 – C5200 per channel.

The circuit of this 30W audio amplifier produce a clear audio output quality. The circuit module doesn’t have any improvement. With Darlington pair in transistor TIP141 and TIP146. This transistor need heat-sink or better temperature.

Composed of two similar mono amplifier. Each channels has its own power supply. This class A audio amplifier take 50V as the fuel, and will produce very loud sound output without distortion.

Based on three characteristics: good quality sound, easy to make, and not expensive circuit, this TOSHIBA DX is worth to try. Just need 36VDC voltage input as a fuel, the circuit can produce 100W output on 40 Ohm speaker or 50W on 80 Ohm, using a pair of TOSHIBA A1943 – C5200 per channel.

Work as pre-amp modul, this circuit offers 20db+ of clean boost. RC & AC Booster Guitar Effect by Xotic also featured controls for volume, gain and EQ controls for treble and bass. With 9V power DC, this circuit is easy to use. As the name, “RC” is mean Really Clean was tested.

Very high power amplifier with 10 pairs of power transistor. Can use MJ15024 and MJ15025 or MJ21193 and MJ21194. Those 20 pieces transistor work as final active component for final gain. This circuit required dual output power supply 130V.

The circuit below is an automatic switch-on emergency light. With IC as automatic controller, and and over charger protector. This circuit will drive the light on when the main power from AC source dismissed.

A simple mini stereo amplifier, which based on 2 chips. As pre-amp, there the MC1458 dual op amp, and the LM378 work as dual 4-watt amplifier.