Tasel

This 400 W MOSFET Audio Amplifier using IRFP448 circuit is simple project. With low noise and distortion, but powerful. As the fuel, this project consume 70-80 Vdc and 5 A fuse as the protector for short circuit.

This circuit will charge most lead acid battery with quickly and easily. A LED in the circuit as a monitor, which light when the battery fully charged an this circuit automatically switched off.

Using IC 4001, 4027, NE555, and CA3130, this circuit can convert 24VDC to 220VAC 300W. A pairs of MJ15003 or 2N3773 as the last active components before drive the pulse into the transformator.

Here is the VU meter with 12 LEDs circuit. This is an easy visual indicator of the audio level signals. Can be applied to various input levels, adjusted by trimmer TR1 (state) – TR2 (Gain), then rectified by diodes D1-D2 (standard negative mark-recovery periods) and provide in the main circuit indication, consisting of the diodes [...]

Very small amplifier witch can provide 7W/4Ohm output. This circuit, although have small output, but capable to produce output with low total harmonic and cross-over distortion and work at 20Hz to 20kHz. The circuit using IC TDA2003 as main component.

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.

With 4 pairs of 2SC5200 and 2SA1943, this circuit can produce about 500W. Voltage input as the fuel is +/- 65V. And for best result, you must use heatsink and fan. This circuit also feature circuit protection using fuse.

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.