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Audio Circuits:  Preamplifiers  Page 1
Amplifier -- Main Page          Audio Circuits -- Main Page
Audio Preamps:   #-G        H-O         P-R          S-Z
Last Updated on: Saturday, October 31, 2009 03:07 PM

 

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

4.5 H. Magnetic P.B. Head PreAmplifier  - (diagram added 6/03)

Altec 1564A Preamp Power Supply - (circuit diagram added 2/07)

Altec 428B Microphone Preamplifier schematic - (circuit added 2/07)

API 321 mic preamp schematic - (electronic schematic added 1/07)

Audio Pre-Amplifier - (Tony van Roon's schematic / circuit added 2/07)

Audio PreAmplifier (Reconnsworld) - this is a very easy circuit to build, all parts can be found at the local electronics shop, no matter how worthless it (the local shop,) usually is...(electronic circuit added 9/03)

Balanced Low Noise Microphone Preamp - very low noise, close to  oretical minimum, high hum rejection and variable gain with a single rotary pot, similar to that used in many professional grade mixing desks  (added 8/03)

Balanced Microphone Preamp - (diagram added 6/03)

Band 2 PreAmplifier - (diagram added 6/03)

Car PreAmplifier & Artificial Earth - Especially for car audio installations, can be used for any single supply system (schematic / circuit design added 9/02)

Computer Microphone - circuit by Lazar Pancic  -  adapting electret microphone to soundcards with dynamic microphone inputs(electronic design added 6/07)

Digital Quality Microphone Pre Ampl. using the Model 425 Opamp  - (diagram added 6/03)

Dual Mike Preamp power supply Gerber - (electronic circuit added 08/08/08)

Dynamic Microphone Preamp  - Notice how the transistor bias current flows through the microphone. A similar circuit can be used with an 8 ohm speaker but in that case you would put it in place of the emitter resistor.  (added 2/05)

Dynamic Microphone Preamplifier - (electronic design added 6/07)

ECM Mic Preamplifier  - A high quality preamp for electret mic inserts

Electret MIC Amplifier - (diagram added 6/03)

FET Preamp Cable - (diagram added 6/03)

FM Band PreAmplifier - (electronic circuit added 7/03)


  

Audio Preamps:   #-G        H-O         P-R          S-Z

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