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power transformer voltages [message #24296]

Fri, 01 January 2016 10:48

scrap is currently offline

scrap
Messages: 12
Registered: December 2015
Location: Florida

Junior Member

replaced all caps on tube driver board. no heater voltage from power transformer. schematic is vague on voltages concerning this item. the transformer has two primary windings one with center tap. I'm led to believe these are for domestic or European line voltages. it has five secondary windings. one is +15/-15vdc to power the pre-amp, one is 6.3vac for the tube heaters, one is 450vdc for B+ voltage to the plates, one is 400vdc for the screen grids and the fifth is 300vdc? for bias voltage?? I've looked all over the net for one of these transformers and the company that manufactured them (cin-tran) was bought by standex international in 2001 does not produce them anymore. I will probably have the transformer re-wound by weber or mercury but I will have to supply them the voltage requirements. anyone who can confirm the above values would be greatly appreciated. thank you, scrap.

have a good time all the time.

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[Message index]

		power transformer voltages By: scrap on Fri, 01 January 2016 10:48
		Re: power transformer voltages By: stevem on Sat, 02 January 2016 07:10
		Re: power transformer voltages By: scrap on Sat, 02 January 2016 08:40
		Re: power transformer voltages By: stevem on Sun, 03 January 2016 06:18
		Re: power transformer voltages By: scrap on Sun, 03 January 2016 09:05
		Re: power transformer voltages By: stevem on Sun, 03 January 2016 17:52
		Re: power transformer voltages By: chicagobill on Sun, 03 January 2016 21:34
		Re: power transformer voltages By: scrap on Mon, 04 January 2016 10:58
		Re: power transformer voltages By: stevem on Mon, 04 January 2016 12:07
		Re: power transformer voltages By: scrap on Mon, 04 January 2016 14:23
		Re: power transformer voltages By: chicagobill on Mon, 04 January 2016 13:19
		Re: power transformer voltages By: scrap on Mon, 04 January 2016 14:33
		Re: power transformer voltages By: chicagobill on Mon, 04 January 2016 15:21
		Re: power transformer voltages By: scrap on Mon, 04 January 2016 16:20
		Re: power transformer voltages By: stevem on Tue, 05 January 2016 06:36
		Re: power transformer voltages By: chicagobill on Tue, 05 January 2016 12:53
		Re: power transformer voltages By: scrap on Tue, 05 January 2016 15:19
		Re: power transformer voltages By: stevem on Wed, 06 January 2016 06:36
		Re: power transformer voltages By: scrap on Wed, 06 January 2016 08:41
		Re: power transformer voltages By: stevem on Wed, 06 January 2016 18:42
		Re: power transformer voltages By: scrap on Thu, 07 January 2016 09:07

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