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Dekatron · 19th Jun 2019, 9:32 pm

The primary winding should have some 85 Ohms +/-10% resistance and the secondary should have some 27 Ohm +/-10% resistance.

With 1V RMS at 15KHz on the primary winding the secondary winding should have some 0.5V RMS +/-5% measured with an HP 400H VTVM.

I don't have any replacement to suggest but you might contact Ed Dinning here in the forum and ask if he can rewind it for you with this data. The data is from the AVO test specification for this transformer for the first production units, I haven't seen any other data but those transformers that I have checked have been well within these tolerances.

19th Jun 2019, 9:32 pm	#2
Dekatron Octode Join Date: May 2009 Location: Linkoping, Sweden Posts: 1,465	Re: VCM163 Osc Board. T1? The primary winding should have some 85 Ohms +/-10% resistance and the secondary should have some 27 Ohm +/-10% resistance. With 1V RMS at 15KHz on the primary winding the secondary winding should have some 0.5V RMS +/-5% measured with an HP 400H VTVM. I don't have any replacement to suggest but you might contact Ed Dinning here in the forum and ask if he can rewind it for you with this data. The data is from the AVO test specification for this transformer for the first production units, I haven't seen any other data but those transformers that I have checked have been well within these tolerances. __________________ Martin, Sweden