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Aksa Lender P-mos Hybrid Aleph (ALPHA) Amplifier
Aksa Lender P-mos Hybrid Aleph (ALPHA) Amplifier
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Old Today, 06:19 PM   #2871
bk856er is offline bk856er  United States
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Aksa Lender P-mos Hybrid Aleph (ALPHA) Amplifier
Quote:
Originally Posted by xrk971 View Post
Although I have not tried it directly with the Alpha yet, the fact that the voltage rises slowly should eliminate the turn on thump. The ramp up rate can be adjusted with the RC time constant of the cap multiplier. If it is made slower than say 5 seconds, it should eliminate it.

Looking at the schematic above, it seems the time constant on this system is only 0.15sec - too fast. We would probably have to play with some simulations to slow the DC chargeup. If I look at it on an Oscope during turn on I can verify this. Probably even a DVM can see that it may be too quick in stock form.
I'll be watching for this and appreciate any input, sounds like a useful tweak for my upcoming alpha.

BK
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