I am looking for a trans to give me 10.4V AC without load. I want to upgrade the standard AC wall plug for my turntable motor PSU to a bigger trans. What secondary voltage trans should I get? 9V AC ?
A small 9V transformer with approximately 15% regulation will be about right. If you're lucky you will be able to find a datasheet for the transformer which will tell you the no-load voltage. If you need the voltage to be spot on then you could buy one too high and then remove a few turns from the secondary winding to lower the voltage.
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