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Identify relevant parameters of Transformer Spec. for Audio Application

Upon the advice of this question/answer I have added a 1:1 audio isolation transformer to my circuit. I picked up a transformer at the local radio service shop and dropped it into my bread-board ...
1
vote
2answers
134 views

Can we proof a scavenged transformer of unknown specification?

This step-down transformer was scavenged from a power tool battery charger. It was designed to take 120V AC current and it outputs 20V AC. I can't find any specs for it, so I'm wondering what ...
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2answers
3k views

Transformers in series in the primary end and in parallel in the secondary?

I know the basics of transformers and one thing I have never understood is the specification of primary and secondary voltages. By theory, the 2 parameters of importance is the transformation ratio ...
2
votes
1answer
1k views

Transformer frequency dependence

I have a transformer that I've taken out of scrap. I'm trying to discern it's electrical specifications. In my setup I have a function generator hooked up to the primary winding, and an oscilloscope ...
7
votes
2answers
10k views

Transformer labeled 120v-60hz-35va-12v - What exactly does it do?

I have a pool light whose bulb physically broke, but I've found a way to open the water-tight bulb enclosure to get at the actual bulb. I'm trying to either hunt down a replacement bulb (rather than ...