Re: Murphy A 186 mains transformer gone O/C
Hello,
From the service data the power consumption of the Murphy 186 is 52 watts, whereas that for the Pye P53 is 40 watts.
The combined anode current for the four valves of the Pye 53 is 38.9ma.
From the Mazda valve data the Vh-k(max) is 300V but only for vibrator power supplies so for this purpose it should have a separate heater supply.
My data shows the Murphy A186 as having a 6M1 Magic Eye. Does your set have one ?
So this information would suggest that the Pye P53 transformer would not really be suitable without circuit modifications unless Pye have used an overrated transformer in the P53.
Yours, Richard
Last edited by Mr Moose; 1st Feb 2023 at 12:37 am.
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