Bottlehead Forum

RE: Ping Paul Joppa on BR for SE math

24.18.227.0

In Reply to: RE: Ping Paul Joppa on BR for SE math posted by Jim_R on May 04, 2009 at 15:46:51

The tricky part is usually the plate resistance. The GE data sheet has plots though (I think it's the last page). Figure 28mA and 350 volts - just use the 300v line, it's close enough.

It's easy enough to measure the transformer primary resistance. The secondary may be too low to measure accurately, but you can approximate it to be the same as the primary after correction (i.e. multiply the primary resistance by (8/8000).

GE data sheet (Open in New Window)

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