UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - AVO VCM163

BottleMan · 3rd Apr 2015, 5:42 pm

Martin
261 Volts is within UK tolerance. As the testing was done with zero load, the only current was magnetising current and it didn't even register on my ammeter. Quite apart from this, I am looking at the secondary voltages, which will always have the same relationship with one another. I suspect that at the time the 163 was manufactured the choice made regarding filtering of the input may have been 4 X 1uF was cheaper/easier to fit/readily available than a 400V ac capacitor.
There is a screen on the transformer. Has anyone tried seeing how effective it is?
Graham

3rd Apr 2015, 5:42 pm	#20
BottleMan Tetrode Join Date: Mar 2015 Location: Ashford, Kent, UK. Posts: 93	Re: AVO VCM163 - Some faults I have had Martin 261 Volts is within UK tolerance. As the testing was done with zero load, the only current was magnetising current and it didn't even register on my ammeter. Quite apart from this, I am looking at the secondary voltages, which will always have the same relationship with one another. I suspect that at the time the 163 was manufactured the choice made regarding filtering of the input may have been 4 X 1uF was cheaper/easier to fit/readily available than a 400V ac capacitor. There is a screen on the transformer. Has anyone tried seeing how effective it is? Graham