> Anyone have specs on 5899 or 5639 (they happen to be sylvainia)? None of
> my books list them, as they are all RCA. If not step one will be
Allison,
5899 (Generic class A amplifier tube)
Semi Remote Cutoff RF Pentode.
6.3V/0.15 filament voltage/amp, 165V maximum plate voltage,
155 maximum screen voltage, 4,2 microfarad capacitance on input,
3.4 microfarads on output, 0.015 microfarads on gridplate (max).
5639 (Used in old TV's)
Video Pentode
6.3V/0.45 filament voltage/amp, 150 max. plate voltage
2.2 microfarads on input, 3.0 on output, 1.7 on gridplate (max).
If you need more information, I can fax you a copy of both pages
describing the tubes.
Ed
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Received on Fri Mar 03 2000 - 13:14:00 GMT