4 bulbs blew.. not the same, 2 were 100/90w high and low bean, and the other 2 were just 55w single filament.. Ive got another smaller transformer, when I put in on the 45v winding, I get 42.5vac 8.2a.. I let it run for 5 minutes and both transformers got slightly warm, Im thinking about running this but keeping a close eye on it.. the impedance on the winding is 2.5ohms I think,, im not in front of my notes right nowOk, so you are correct.
Why would four 12V bulbs blow if they were wired in series?
How many bulbs blew?
Are the four bulbs identical?
The resistance can't be less when it's cold. Did you mean 2.8 ohms? If not, then you're having a problem with thermoelectric voltages interfering with your resistance measurement, and you will have to make the measurement another way.ok,, I think ive got all the info I was asked for...the resistance on the winding cold is 2.1 ohm,,hot is .8 ohm ,, the voltage dropped to 34.5vac 9,8a... the test duration was 2 hours.. I don't have a temp probe, but the transformer was warm but I could still touch it without being burned...
How are you measuring these amps?cold= 2.1ohms hot= .8 1.3 ohms lower when hot. 4 new bulbs is series.. 34.5vac 9.8a no rectifier, warn to touch
by Jake Hertz
by Jake Hertz
by Aaron Carman
by Jake Hertz