In message <1374140838.88699.YahooMailNeo@...>,
dated Thu, 18 Jul 2013, abeill¨¦ jean-claude
<jean_claudeabeille@...> writes:
I am a french retired computer analyst and a music and
electonicsenthusiast. Please, will you excuse my english.
It is quite good.
For the moment, I try to understand how does work my amp with LTSpice.
Actually, after an error in handling, one channel failed and activated
a protection circuit (too much quiescent on one output stage polarity).
I tried to fix this but I failed and ordered a complete replacement
PCB. But I am curious and like to understand things. So I drawn the
circuit in LTSpice from the PCB and could not understand it in some places.
Please upload the circuit (we use the US term ''schematic' on this list)
to Files => Temp on the list's web site:
I asked Bob Cordell some help but he was to busy and answer me to read
chapter 1-4 from his book. OK. In fact, in LTSpicen there is almost no
quiescent current in output stage and the VBE spreader does not work at
all. I thought that some models where not correct but I don't know. I'm
deadlocked.
I expect we can help once we see the schematic.
--
OOO - Own Opinions Only. See www.jmwa.demon.co.uk
Why is the stapler always empty just when you want it?
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
