Re: Powerstat and transformer for variable voltage output


<tucker@xxxxxxxxxxx> wrote in message
news:1139336202.525588.229590@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hello, I need to charge a alot of different voltage lead acid batterys
6,8,10,12, ect. I have a
old charger that only puts out 12-14vdc, I have a 10amp 120vac
powerstat (variac) im thinking
of adding to the input of the transformer to reduce output on the
secondary. Will this work?
Im not sure about the inductance & operating a transformer @ 1/2 or
2/3 the normal 120 vac
input voltage, im wandering if this will effect efficiency or if it
will work at all.


Build yourself a variable charger with the variac.

Add a bridge rectifier to the output of the variac, input and output fuses,
an ammeter, a power switch. You could also add a timer.

Then you have yourself a 0 to 120 volt dc unregulated charger. Charge 8x
12v in series.

For lower voltages you could use your 12volt chargers transformer but if the
charger has some kind of electronic output control you would have to bypass
it because it certainly is designed for a specific input/output voltage.
Won't hurt the charger to try though.


-----------------------------------
AcidBURN


.

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