DIY audio amplifiers circuit diagram electronics projects and other related audio projects like : power amplifiers, audio systems, audio filters, vu meters, tone control, audio equalizers and more .
This microphone amplifier circuit electronic project is designed using MAT02 dual monolithic transistor and few passive electronic components .This microphone amplifier circuit allow use of microphones with different impedance and provides a voltage gain of 20 dB and 23.5 dB (amplification 10 and 15), selectable from a switch.
This voice recording and playback circuit is designed using ISD1012, ISD1016 and ISD1020 integrated circuits that allow recording and playback of certain sounds, for a period of several seconds.
