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ms660 · 30th May 2016, 6:41 pm

The increased mains voltage will increase the HT but by what percentage I'm not sure, however, V4 according to my quick calcs is passing the correct anode current give or take a couple of mA, which is a good sign.

So, provided the capacitors connected across the HT are suitably rated I wouldn't worry too much at this stage but if you are concerned you could insert a dropper resistor in series with the rectifier's output.

Lawrence.

30th May 2016, 6:41 pm	#175
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: HMV 653 Broadcaster all wave. The increased mains voltage will increase the HT but by what percentage I'm not sure, however, V4 according to my quick calcs is passing the correct anode current give or take a couple of mA, which is a good sign. So, provided the capacitors connected across the HT are suitably rated I wouldn't worry too much at this stage but if you are concerned you could insert a dropper resistor in series with the rectifier's output. Lawrence.