I've been reading in the archives about bucking transformers, and want to try one for a pair of Dynaco MkIII amps and a PAS I just took out of storage. They seem simple enough to configure, at least the example below does.
I've got a filament transformer I want to use, but it's not quite the two primary, two secondary wire variety shown above. The specs on the secondary are: Series: 12.6V ct@6.3A, Parallel: 6.3V@12.6A Here's the diagram:
When the primary is wired via the parallel 115 v, I measure 7 VAC between output taps 7 & 8 and 11 & 12, the parallel connections. Good so far. But what is throwing me is Note #2 from the spec sheet:
I asked one of our electrical techs at work today, and he seemed confused by note #2 as well. He drew up what he thought was the correct connection using both secondaries, but I'd like a few more opinions
My question is: How should this be wired to buck 6.3 V @ 12.6A?
Link to complete spec sheet is below.
Thanks.
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Topic - What the buck? - 1973shovel 19:21:18 05/18/12 (27)
- Here is a different approach to try..... - drlowmu 07:25:15 05/22/12 (5)
- RE: Here is a different approach to try..... - Eli Duttman 19:06:40 05/23/12 (1)
- RE: Here is a different approach to try..... - drlowmu 08:34:04 05/24/12 (0)
- Thanks for the suggestions, Jeff - 1973shovel 06:30:01 05/23/12 (2)
- RE: Thanks for the suggestions, Jeff - drlowmu 08:47:37 05/24/12 (1)
- Market - And How, Brother! n.t. - elektron 12:00:02 05/24/12 (0)
- RE: What the buck? - Jim McShane 12:55:46 05/19/12 (1)
- RE: "you'll get significant voltage drop when it's loaded!!" - 1973shovel 17:09:38 05/19/12 (0)
- RE: What the buck? - wheezer 20:41:50 05/18/12 (2)
- 6 or 7 volt drop was the goal - 1973shovel 17:12:53 05/19/12 (1)
- RE: 6 or 7 volt drop was the goal - wheezer 16:06:06 05/20/12 (0)
- RE: What the buck? - Eli Duttman 20:06:03 05/18/12 (9)
- RE: both primaries in parallel and both secondaries in parallel - 1973shovel 17:15:05 05/19/12 (8)
- RE: both primaries in parallel and both secondaries in parallel - Eli Duttman 18:00:46 05/19/12 (7)
- RE: "you generate waste heat, but the tube heaters will not fail prematurely." - 1973shovel 07:38:46 05/20/12 (6)
- RE: "you generate waste heat, but the tube heaters will not fail prematurely." - Eli Duttman 19:22:28 05/20/12 (5)
- RE: "The 1st filter cap. can't exceed 20 mF" - 1973shovel 15:08:39 05/21/12 (4)
- RE: "The 1st filter cap. can't exceed 20 mF" - Eli Duttman 17:29:50 05/21/12 (3)
- Potato Masher - 1973shovel 05:18:05 05/22/12 (2)
- RE: Potato Masher - Eli Duttman 18:49:35 05/22/12 (1)
- RE: Potato Masher - 1973shovel 06:36:05 05/23/12 (0)
- RE: What the buck? - Neff 19:30:33 05/18/12 (5)
- RE: "Number 2 means use all windings for full current capacity." - 1973shovel 19:50:32 05/18/12 (4)
- Late getting back, others covered your question....nt - Neff 05:59:47 05/19/12 (0)
- RE: "Number 2 means use all windings for full current capacity." - wheezer 22:40:00 05/18/12 (2)
- RE: "Number 2 means use all windings for full current capacity." - Wojciech 08:43:12 05/23/12 (1)
- RE: "Number 2 means use all windings for full current capacity." - wheezer 12:40:35 05/23/12 (0)