Mono Preamp (or stereo), based on an LM387 for dynamic microphone. The preamplifier described here is designed to connect a…
Non-inverting amplifier uses a dual audio power amplifier LM1877 type. This IC can deliver output power of 2 W per…
Low voltage bridge audio amplifier based on op amp IC LM386 (Low Voltage Audio Power Amplifier). Application of this circuit…
The mic pre amp described here is designed to connect a small electret microphone and uses an integrated circuit type…
The previous Preamp for the speakers as a microphone installation is indeed simple, but has virtually no gain. It is quite possible to add a second transistor to fill the gap, as…
This Microphone Preamp circuit shows that it is possible to use the speaker as a microphone, and is specifically designed…
This achievement shows that it is possible to create a balanced dynamic microphone preamp, it is relatively simple. This preamp…
This circuit is a mono preamp for use with a dynamic microphone or electrostatic. It has a phantom power and…
This circuit is perfect pre-amp to amplify the signal from a mono microphone. It is based on the use of…
This receiver operates on the same principle as 40W / 2 ohm (24W / 4 ohms) bridge power amplifier. It…