Pavel's MOSFET Follower - No Darlington Mod

[auriga2001in]

PS and cap multiplier question

Hi Shaan,
Can you please review my configuration to see if it is applicable to my build of the schematic in post# 145?

I have a 25-0-25 200 VA toroid. Is it possible to implement 2 cap multipliers for the two channels of this amp? Something like: 25-0 winding to one multiplier, and 0-25 winding to the other?

Would a 10 amp bridge rectifier suffice?

Thanks

 

[shaan]

Hi auriga.

I'd suggest you drop the schematic in post145 and go for the one shown in Figure-4 in Project 83 page at Rod's site sound.westhost.com

Regarding PS, a 10A rectifier will suffice but try to use separate windings for each channel or one single winding for all channels.

If you must use the method you proposed then make Absolutely sure that the two grounds for each amp Never comes in contact, ever! But I think this will be hell of a trouble as the signal source will most probably short the grounds and you may end up with a system prone to set itself on fire.

 

[auriga2001in]

Thanks Shaan for the advice. I'll wait for a dual winding transformer (not center tapped) to experience the SE magic.

 

[shaan]

Hi auriga.

In case you have not already bought the components for this amp, it's a hugely better idea to go for the DoZ amp instead of this one.

 

[lundhans]

Zener noise

You might like to place a cap across the ZD6V2 diode to reduse noise.

Or you could use a transistor connected like the attached schematic. It generates a zenerdiode of appox. 6V with very low noise.

Best regards

Lasse