Electronics & Electrical Engineering Forum:
Battery Charger Transformer
Question on what type of transformer is used in a battery charger. The transformer that I need to replace looks weird. The non polarized ac plug has one wire soldered to a post on the transformer and the other ac wire goes to a switch for 6v or 12v. The other two sides of the switch has two small wire from the transformer. The output of the transformer one wire that goes thru a meter and out to the battery. Then there are two bare wires out of the transformer that go to the case, thru a diode and out to the battery. Older charger. What type of transformer do I need to buy? 3 amp output. It seems like it is a dual voltage primary. So it seems like a 220v/110 primary with 12v out on secondary. So when the switch is set to 6v it would like putting 110v on the 220v tap and only getting half out. Any help on where to get one and the type would be nice. If you need a picture let me know.