150W Car Audio Amplifier

150W Car Audio Amplifier
This is the circuit design of 150W car audio amplifier. The circuit is divided in two block diagrams: The tone control circuit and power amplifier circuit. Tone Control for 150W Car Audio Amplifier The tone control circuit build based on IC LF353 In stereo mode, we shall have the action of eight loudspeakers which are going to create a very important sound pressure. Tone Control Scheme (more…)

21W Class AB Audio Amplifier

21W Class AB Audio Amplifier
This is the circuit design of 21W class AB audio amplifier uses power transistors as the main part. It is a simple design, and simple to set up. Set the 10k trimmer to about half way and the 470 ohm trimmer to 0 resistance. Power up and set the quiescent current to 30mA by trimming the 470 ohm trimmer. Once done, measure the offset voltage. Trim the 10k so that between -30 and 30mV is measured. The amplifier should

4 Channel Amplifier with IC LM1877N

4 Channel Amplifier with IC LM1877N
This is a 4 channel amplifier circuit build based two IC LM1877N. A LM1877 can be used for a stereo amplifier. The circuit ideally suited for use with quadraphonic equipment such as a Sound Blaster Live card. There is no volume control in this circuit, audio levels being directly controlled from the sound card itself. (more…)

600W MOSFET Power Amplifier

600W MOSFET Power Amplifier
This is the circuit diagram of 600W MOSFET power amplifier. The circuit will give you more than 600 Watt audio output for speakers with impedance of 4 Ohm. This high power amplifier circuit uses 6 pieces of N-channel MOSFETs IRFP450 in the output stage alone and will give you about 400Watt power. To make more than 600Watt, then you need to use 12 pieces of N-Channel MOSFETs IRFP450. One of the construction sequence to produce more output power of

DIY Guitar Transistor Preamp

DIY Guitar Transistor Preamp
Here the circuit design for DIY guitar transistor preamp. It consists of a circuit of two transistors and four controls that can be vary the level of the treble, bass, gain, and total salidad circuit (volume). It can be used as buffer at the beginning of a chain of effects. Or combine it with the Marshal Guvernor and a power to put together a cute amplifier. (more…)

MOSFET Power Amplifier 5200W IRFP250

MOSFET Power Amplifier 5200W IRFP250
This is the circuit design of Mosfet power amplifier 5200W RMS, the schematic is for single channel. The circuit uses 16x IRFP250 to gain 5200W RMS power output at 2 ohms load. To feed this circuit , you will need 150 volts dual polarity (symmetrical) power supply of course with very high DC current. (more…)

260W Power Audio Amplifier

260W Power Audio Amplifier
This the circuit diagram of 260W power audio amplifier capable of delivering up to 260W RMS at 8 Ohms load. The signal level of 1 VPP standard amplitude is input to a differential stage composed of BC556C Transistor. Then the signal is input to the post-formed by complementary transistors in order to achieve the desired power. (more…)