Mono preamp with small transformer Archives - Amplifier Circuit Design https://amplifiercircuit.net/tag/mono-preamp-with-small-transformer Amplifier Project Schematic Diagram Fri, 23 Dec 2011 08:16:08 +0000 en-US hourly 1 103688205 Mono Preamp with Small Transformer and Two Transistors https://amplifiercircuit.net/mono-preamp-with-small-transformer-and-two-transistors.html https://amplifiercircuit.net/mono-preamp-with-small-transformer-and-two-transistors.html#respond Fri, 18 Nov 2011 06:59:54 +0000 http://amplifiercircuit.net/?p=742 The microphone preamplifier described here is a ‘hybrid’ passive / active. A small transformer input provides a small contribution to […]

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]]> Mono preamp schematicThe microphone preamplifier described here is a ‘hybrid’ passive / active. A small transformer input provides a small contribution to the gain of all (about 10 dB), and a transistor provides the additional gain (35 dB) for normal use with a small dynamic microphone. About 40 kHz bandwidth, small and simple installation that requires little space.

Power supply : It is not unusual, it chose the power of 24 V. The reason is that we want to have a module with a fixed gain and not adjusted. if your also want to use the microphone low output signal amplitude  your can lower the supply voltage to 15 V or 12 V. Make all the same tests with 24 V and 12 V, just to see whether you notice a difference in the sound …

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