TSSA - The Simplest Symmetrical Amplifier

Lazy Cat

Member
2007-09-15 9:57 pm
:)
 

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juma

Member
2005-11-08 11:27 am
Zemun
Schematic explains itself. ;)

1K trimmer is replaced by a 2k2 fixed and in the negative part 1k + 2k trimmer.

RC top and bottom is set to 2.2k=> more OLG.

BC550 and 560 is replaced by KSC3503 and KSA1381.

at 24V it will settle to about 1.2 - 1.4 amp.

for an equal current in the mosfet an vgs difference on the 10n20 and 10p20 from exicon of about ~1V. This will lead to and offset. Maybe a diode in series with one of the collector resistors will help a lot!?.

I have attached the measurements.
 

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  • test 10k 6w 8r.pdf
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  • test 20k 6w 8r.pdf
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  • test 10k 1w 8r.pdf
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  • test 1k 6w 8r.pdf
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  • test 1k 6w no load.pdf
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