Search Results for: preamplifier circuit diagram

2 x 70W Power Stereo Amplifier based on IC STA550

70W Power Stereo Amplifier STA550

Here’s the circuit diagram of a 70W stereo power amplifier which built using single power IC STA550. The circuit is simple and require little additional electronic components to support the work of IC STA550. This power stereo amplifier works with dual polarity / symmetrical power supply. Since based to the datasheet, the negative supply range… Read More »

HiFi Audio Pre-amp

HiFi Audio Pre-amp Circuit Electronic

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. This circuit uses BC550C / BC560C transistors as active component. Use regulated power supply 15VDC for maximum result.