Simple Symetrical Amplifier

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SAP15N - SAP15P Sanken

there is a similar with EF output :note:
 

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hi shaan, can i supply with +/-45v for SSA ,is there any change
thanks.

I haven't tried it with +-45V but a quick simulation shows the following changes.

1: 470ohm Zener feed resistor increased to 1K.
2: 1K2 Current feed resistor might need to be increased to 1K3. As the higher PS potential causes high current draw in VAS.
3: Removal of one of the 1N4148 diodes and use only one to bias the FETs to about 175mA.

The input bias and VAS bias must be carefully set with varying the 1K2 resistor. You will probably get reduced THD with higher PS voltage. And of course more power into same load.
 
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