Tag Archives: Cheap microphone preamp

The Mixer Pre MIC 3 channel by LM348-741×4

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If you are looking for a mixer with a microphone, and can easily make your own.I highly recommend this circuit.It is a microphone pre-amplifier for 3-channel or 3-channel mixer itself. When looking at the circuit, we have featured the use of a single integrated circuit LM348. The internal structure of… Read more »

The Mixer Pre MIC 3 channel by LM348-741×4

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If you are looking for a mixer with a microphone, and can easily make your own.I highly recommend this circuit.It is a microphone pre-amplifier for 3-channel or 3-channel mixer itself. When looking at the circuit, we have featured the use of a single integrated circuit LM348. The internal structure of… Read more »

Computer Microphone by BC547

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This circuit was submitted by Lazar Pancic from Yugoslavia. The sound card for a PC generally has a microphone input, speaker output and sometimes line inputs and outputs. The mic input is designed for dynamic microphones only in impedance range of 200 to 600 ohms. Lazar has adapted the sound… Read more »

A microphone from the speaker

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Operation of the circuit. be When entering the power supply circuit for Q1 will work as an amplifier in common base.That matching the input impedance of the Impact of Impact Speaker impedance low.When signal sound into the speakers.Audio is converted to electrical signals through C2.In addition, C2 to prevent voltage… Read more »

Dynamic Microphone Preamplifier Mono by 3 Transister C945

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This circuit Dynamic Microphone Preamp,Pre MIC 3 Transister mono. By Transister Part C945= 3 part.(TR1-TR3) OR C828 OR C458 Supply Volt 12V – 24V. Easy to build and low cost. Circuit Pre MIC – 3 Transister (C945) mono PCB Pre MIC – 3 Transister (C945) mono

Pre MIC (microphone preamplifier) 2 CH by IC NE5532 or LF353

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This be Pre Mic circuit or Microphone preamplifier circuit model 2 CH. By this circuit uses integrated number circuit NE5532 or LF353. It perform enlarge sound signal from Dynamic Micro phone give the power goes up for subsequently submit to go to still stereo power amplifier circuit next. This circuit… Read more »

Pre mic audio amplifier with ic LM386

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This circuit be signal sound expansion from condenser microphone give with small-sized loudspeaker. It compose the importance is part pre mic use transistor just one enlarge sound signal gives the power goes up change come to a part amplifier with the integrated circuit LM386 utter go out give a loudspeaker…. Read more »

Pre Microphone low impedance using TL084

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Pre microphone model Low impedance circuit,that interesting. Because be the circuit has small-sized. It uses integrated number circuit TL084 be op-amp kind low noise. Then of good quality good sound , besides if you have no Microphone still can use 8 ohm loudspeakers can replace. By use transformer , build… Read more »