Archive for tag: stk4141 stereo amplifier

HiFi Pre-amp

Audio and Amplifier | By: Diagram mania

This is a HiFi pre-amplifier circuit diagram with low noise output. Very wide range frequency from about 10Hz until up to 100Khz  will be gained by this preamplifier for maximum audio performance. Here the response of the preamp’s frequency and phase: Here the diagram of total noise at output, measured with 600R load: circuit by […]

2x25W Stereo Power Amplifier with STK4141II

Audio and Amplifier | By: Diagram mania

Here the stereo power amplifier based on single IC STK4141II. This amplifier circuit will deliver 25W on each output channel. Recommended voltage is 27.5V for 8ohms speaker and 24.5V for 4ohms speaker while the maximum voltage to supply this circuit should be about 41 VDC. Heatsink usage on the power IC is a must. Use […]