Universal output transformer - UK Vintage Radio Repair and Restoration Discussion Forum

Mike Brett · 19th May 2007, 8:55 am

Hello
I am building a small battery valve amplifier for a valved crystal set. The amplifier uses two valves, a DL 92 and a DAF 91. I have purchased a universal output transformer but am unsure of the connections. Can anyone give me an idea of what the primary impendance and secondary impendance should be and which one connects to the speaker. Also what ohms the speaker should be.
Many thanks Mike.

Mike Brett · 19th May 2007, 1:46 pm

Hello
Managed to sort this out now.
Mike

Pete_kaye · 21st May 2007, 4:52 pm

Good

can you tell us /me what you concluded.

19th May 2007, 8:55 am	#1
Mike Brett Retired Dormant Member Join Date: Dec 2005 Location: Wisbech, Cambridgeshire, UK. Posts: 452	Universal output transformer Hello I am building a small battery valve amplifier for a valved crystal set. The amplifier uses two valves, a DL 92 and a DAF 91. I have purchased a universal output transformer but am unsure of the connections. Can anyone give me an idea of what the primary impendance and secondary impendance should be and which one connects to the speaker. Also what ohms the speaker should be. Many thanks Mike.

19th May 2007, 1:46 pm	#2
Mike Brett Retired Dormant Member Join Date: Dec 2005 Location: Wisbech, Cambridgeshire, UK. Posts: 452	Re: Universal output transformer Hello Managed to sort this out now. Mike

21st May 2007, 4:52 pm	#3
Pete_kaye Octode Join Date: Jun 2005 Location: Sheffield, South Yorkshire, UK. Posts: 1,227	Re: Universal output transformer Good can you tell us /me what you concluded.