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Title: Plate to line transformers backwards Post by: KE6DF on September 12, 2011, 07:23:11 PM I have a couple Stancor WF-36 low level p-p plates to line transformers.
These are broadcast quality audio transformers and are knockoffs of the UTC A-26 units. My question: Would these transformers work as low level line to grid transformers if connected backwards? Would they likely give as good audio response as a UTC A-12 or a LS-12 input transformer? Obviously, the step up ratio would be less, but other than that.... Title: Re: Plate to line transformers backwards Post by: KA2DZT on September 12, 2011, 07:56:19 PM Should work, except for the step-up ratio would be less. Probably not as class B drivers, but low level audio they should work. They would work as class AB1 drivers.
Fred Title: Re: Plate to line transformers backwards Post by: k4kyv on September 12, 2011, 08:53:38 PM What is the plate impedance of the primary? I assume the secondary is 500/600 ohms line output.
I probably have a real UTC A-series line to p-p grids transformer, and I know I have a LS-12 or 12X. If the primary impedance of the Stancor is something I could use, wanna swap? Title: Re: Plate to line transformers backwards Post by: KE6DF on September 12, 2011, 11:09:02 PM P-P primary impedance is 30K
Attached is a page from the Stancor catalog. Yes, I'd be happy to swap. Dave Title: Re: Plate to line transformers backwards Post by: k4kyv on September 13, 2011, 11:48:30 PM Dave,
Check your PM box, regarding what I found in my transformer stash. Don Title: Re: Plate to line transformers backwards Post by: KE6DF on September 14, 2011, 01:41:39 AM Thanks Don, AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
The swap will let me compare the A-11 to the WF-36 since I have two of the WF-36s. Dave |