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In Reply to: If AC voltage coming off a power tranny is low... posted by David Smith on January 5, 2015 at 14:37:40:
Should be around 118-125 VAC. If so...Pull the secondary wires of the PT off the rest of the circuit. Do this to remove any load on the secondary, from the rest of the PSU. Measure VAC from each leg to the center tap, again. See if these numbers are in spec with manufacturer's data for the tranny. If they are still low, you prolly need a new PT.
If both the isolated primary and secondary VAC's are ok. You may have issues downstream. Could be that rectifier you are using. An 5AR4/GZ34 should put out more voltage than a 5V4G, if the amp has the proper working PT, designed for use with the 5AR4.
Good luck! Keep us posted.
Edits: 01/05/15
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Follow Ups
- First measure the VAC of the specific outlet you are using - FenderLover 16:05:28 01/05/15 (3)
- RE: First measure the VAC of the specific outlet you are using - David Smith 22:00:53 01/05/15 (2)
- It's safe for the transformer - 1973shovel 02:51:03 01/06/15 (1)
- Thanks. nt - David Smith 05:05:26 01/06/15 (0)
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