The following circuit is a 5W stereo audio amplifier, built based on single amplifier IC TA7227. The TA7227 can be used for dual mode (stereo amp) and single mode (bridge connection/mono amp). This IC type featured some circuit protection: thermal protection, over voltage protection, current limitter and BTL DC short connection. The tone control circuit… Read More »
Here is the circuit diagram of 4 x 35W quad bridge amplifier. This is a power amplifier that has four input channels and four output channels or commonly called the quad amplifier. Power amplifier is designed specifically for car audio system applications. With a fairly large output power per channel, low distortion and low output… Read More »
This is a mono power amplifier circuit powered with single Amplifier chip STA5100. The chip will deliver single power output at 140 watt. For stereo application, just build two identical circuit and then doubled the power supply current output by increase the current value of the transformer. This amplifier powered using dual polarity (symmetrical) power… Read More »
Below circuit design is a simple Hi-Fi 10W audio amplifier circuit based on TDA1910. This circuit will deliver 10W power output if used 8 ohm loudspeaker and powered with 24V DC supply. This circuit can be operated with voltage range of 8V – 30V DC, with recommended supply is 24VDC. Mount the TDA1910 on a… Read More »
This is a stereo power amplifier based on Samsung IC KA2211. With single chip, this circuit will deliver stereo output channel up to 5.8W on each output channel. The circuit can be supplied with general purpose power supply. KA2211 is a dual audio power amplifier for consumer application. It is designed for high power, low… Read More »
This is the circuit diagram of 2 x 22W stereo car audio amplifier. The circuit is powered by a single IC TDA1553 with some external components, this IC will handle your stereo car audio system. The TDA1553CQ is a monolithic integrated class-B output amplifier in a 13-lead plastic DIL-bent-SIL power package. It contains 2×22 W… Read More »
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 in this circuit. +/- 50V symmetrical (split/dual polarity) power supply with minimum 3A electric current should be used for maximum performance.
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