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David Nebenzahl David Nebenzahl is offline
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Default Carlsbro Showman parametric/1 oscillating amp , 1990

On 6/16/2010 1:13 PM AZ Nomad spake thus:

On Wed, 16 Jun 2010 12:32:24 +0100, N_Cook wrote:

Removed the triac speaker prot cct just in case a reaction with that, same
result. Checked ESR of all cap types.
Upto +/-40V rails , below oscillation, all DC agree near enough on both
channels all TO3,TO220 and TO92, zeners.
Go up to about +/-45V and the 6V, 5W bulbs start glowing that I added into
the supply rails , alternately swapping dim and bright pairs very odd. Next
I'll disconnect 1 of each complementary pairing of MJ15024 and see what
happens. Any other suggestions? Next stage is sketching out the cct


Are you posting from a cellphone? Do you have an internet service provider
charging you by the byte?


Nah, he just uses this public forum to post badly-formatted, cryptic
notes to himself for future reference, apparently.


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