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Old 3rd Mar 2021, 9:06 am   #63
Dekatron
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Join Date: May 2009
Location: Linkoping, Sweden
Posts: 1,465
Default Re: VCM 163 No.1. Problem while calibrating

I made a few simple tests with other circuits involving IC's but found that it would probably be easier to rewind the transformers and replace the thermistors with something modern if they ever broke.

Modern isolation IC's also required more voltages from a power supply so that it also got more complicated, some of the voltages also had to be isolated from the other due to the isolation design which meant more secondary windings (or isolated DC/DC modules).

All of this meant it cost a lot and would also take up a lot of space which made it complicated to put in the space available, I even split the power supply from the amplifier/oscillator, so I didn't go beyond some tests. Nor did I have the time I needed for proper design and tests to spend on it as my guess is that the purists would never accept anything else than the original design.
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