Hey Guys,
As my basement theater is coming closer to completion, I need to build a power filter/sequencer for all of my gear. So now I've got a box, a bunch of EMI/RFI filters, a pile of heavy duty relays, and some delay timer circuits from Apogee.
The sequencer will have a number of outlets and the front end gear (preamp, CD player, DVD player) will be running from balanced power. I picked up an Avel Lindberg 800VA transformer from Parts Express (that link on the HTGuide webpage has been getting a real workout from me as my projects are nearing completion!).
The wiring schematic for the transformer is here. I wired the primaries in parallel and the secondaries in series as shown in the diagrams.
The problem is that each secondary is providing just over 66VAC, so when I connect them in series, I'm looking at just over 133VAC for my gear. This seems a bit high to me. Since the draw on the transformer will likely remain below 1.5A, I don't imagine any droop in the output voltage of the transformer.
What is the best solution here? I was thinking of unwrapping the transformer and just unwinding the secondaries by a few turns to bring them down to 60VAC and then re-taping the core.
Is there any reason I shouldn't do this or is there a better solution?
Thanks!
Eric
As my basement theater is coming closer to completion, I need to build a power filter/sequencer for all of my gear. So now I've got a box, a bunch of EMI/RFI filters, a pile of heavy duty relays, and some delay timer circuits from Apogee.
The sequencer will have a number of outlets and the front end gear (preamp, CD player, DVD player) will be running from balanced power. I picked up an Avel Lindberg 800VA transformer from Parts Express (that link on the HTGuide webpage has been getting a real workout from me as my projects are nearing completion!).
The wiring schematic for the transformer is here. I wired the primaries in parallel and the secondaries in series as shown in the diagrams.
The problem is that each secondary is providing just over 66VAC, so when I connect them in series, I'm looking at just over 133VAC for my gear. This seems a bit high to me. Since the draw on the transformer will likely remain below 1.5A, I don't imagine any droop in the output voltage of the transformer.
What is the best solution here? I was thinking of unwrapping the transformer and just unwinding the secondaries by a few turns to bring them down to 60VAC and then re-taping the core.
Is there any reason I shouldn't do this or is there a better solution?
Thanks!
Eric
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