- Joined Nov 10, 2018
I have a couple APC UPS transformers that I salvaged when the systems died. I now actually have a use for one in the circuit diagram shown above.
I am using 15 gauge Nichrome wire so it'll be thick enough to cut a specific shape in foam to create a Carbon fiber reinforcing hoop for my Paramotor trike. According to the Nichrome calculator, I'll need about 2 volts and 10 Amps to heat the 15 gauge Nichrome wire to 600 degrees to cut the foam.
Here's a picture of the salvaged UPS transformer. APC does not provide any specs for their components.
I think my son might have 'borrowed' my good multimeter or CRS is kicking in -- so I had to try to use a crummy little tester that probably is only good for continuity.
Resistance (ohm) testing between leads 1&2 (white-yellow)/1&4 (white-blue)/2&3 (yellow-black)/3&4 (black-blue) were INFINITE(Open) on this tester.
Resistance (ohm) testing between leads 1&3 (white-black) AND leads 2&4 (yellow-blue) were close to ZERO OHM on this tester.
Even though I have two boxes of wallwarts collected over the years, they all appear to be AC-to-DC converters. I have having trouble finding a low voltage AC source to test the primary to secondary windings.
Can some of you very knowledgeable folks please weigh in and tell me if I'm on the right track or simply confirm that I'm good to go in using this transformer for this purpose?