The following is a circuit of a power amplifier 140W. This Circuit using 741 IC-based circuit opAmp as strengthening early before the final strengthening by four transistors thereafter. Make sure you use a heatsink on the transistors to reduce excess heat in the transistors. Power supply used is the type of dual polarity power supply… Read More »
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 »
This 300W OCL power amplifier -i’m sorry for the blur diagram, but it should be readable- use 4 pairs of 2N3055 dan MJ3055 transistor as the main power components. This is good circuit, i’ve built this OCL (ouput capacitor-less) power amplifier circuit for my school project, and of course i use it for my home… Read More »
The following diagram is the circuit diagram of simple 4W audio amplifier based TDA1013B. The amplifier is based on integrated audio amplifier chip, TDA1013B which is able to gained the audio power output up to 4W at 8 ohm loads. Wide supply voltage range can be used for this circuit from 10VDC to 40VDC. Recommended… Read More »
This is the 100 Watt power amplifier circuit based power amp chip LM3886. Single chip of LM3886 is able to generate power output up to 68W. In this 100W power amplifier circuit, the two of LM3886 are paralled to gain more powerful amplifier output. This amplifier can deliver about 50W into a 8-ohm speaker and… Read More »
This is an 250mW RF power amplifier circuit project. This circuit is designed to amplify the output of about 7mW wide band FM transmitters to a final level of about 250mW. General purpose 12V DC power supply can be used to operate this RF amplifier circuit. Schematic Diagram: Components List: R1 ____________________ 10R R2 ____________________… Read More »
Here is a Hi-Fi power audio amplifier circuit, built with a power IC TDA2050. This circuit will produce a power output up to 32watt. With good sound quality, high power and very low distortion feature, this circuit will be very suitable for simple and cheap audio systems. TDA2050 Amplifier Schematic diagram: TDA2050 Amplifier PCB Design:
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 »
Here the stereo power amplifier based on single IC STK4141II. This stereo amplifier circuit will deliver 25W audio power on each output channel. Recommended voltage is 27.5V for 8 ohms speaker and 24.5V for 4 ohms speaker while the maximum voltage to supply this circuit should be about 41 VDC. This circuit operated with dual… Read More »