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Motorola VT-71M-A

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06-01-2016, 07:35 PM

bandersen

RCA 741PCS

Join Date: Mar 2009

Location: Chicago, IL

Posts: 8,808

Quote:

Originally Posted by EdKozk2

Anyone have experience with the resistor-diode in series with the filament strings?

Yes, I've tried all three methods including the diode. Here's a video I made while experimenting: https://youtu.be/4IgEYXcJ2xY?t=17m36s

The diode works well, but does not offer a soft power up so I recommend adding a thermistor in series.

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