Asymetric pre amp dual supply Archives - Amplifier Circuit Design https://amplifiercircuit.net/tag/asymetric-pre-amp-dual-supply Amplifier Project Schematic Diagram Fri, 23 Dec 2011 05:49:09 +0000 en-US hourly 1 103688205 Asymetric Pre-amp with Dual Supply Voltage https://amplifiercircuit.net/asymetric-pre-amp-with-dual-supply-voltage.html https://amplifiercircuit.net/asymetric-pre-amp-with-dual-supply-voltage.html#comments Wed, 14 Sep 2011 06:15:58 +0000 http://amplifiercircuit.net/?p=469 This is the same scheme as the one shown Asymmetric Pre amp, but may seem more simple due to the […]

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]]> asymetric pre amp dual supplyThis is the same scheme as the one shown Asymmetric Pre amp, but may seem more simple due to the disappearance of some components.

Virtual ground
With power of symmetrical type, we do not need the virtual ground, and components that were working for this function have no purpose.

Output coupling capacitors?
A priori, we should not need coupling capacitors in the signal AF output of the preamplifier, since the resting voltage (no audio signal at the input) is close to 0V continuously. However, I leave to you to decide whether or not to implement them, knowing that the value of the voltage may be present output depends on the op amp used.

Asymetric pre amp scheme for single or dual power supply

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