Hi Capacity Battery charger

[ocular]

Have a 2KVA 240V 'Generator' that I want to be able to use as a backup
charger for a 12 volt battery bank that is usually charged by solar
panels. Need a hi capacity battery charger ~ 20amps to runoff the
240volt petrol powered unit.

Would a number of older style 240 volt to 12 volt Halogen transformers
run thru a bridge rectifier work? Do they have a predictable waveform
and frequency so that the AC output voltage (11.5VAC) can be multiplied
by 1.4 to give the DC voltage minus 1.4 volts (forward voltage of diode
x2) = 14.56VDC

The more modern "electronic" Halogen transformers have square waves and
high frequency 20-32KHz and ? need a fast recovery bridge rectifier but
would not develop 14volts DC. Please advise.

 

[budgie]

On Tue, 5 Oct 2004 23:44:11 +1000, ocular <ocular@at_powerup.com.au> wrote:

Have a 2KVA 240V 'Generator' that I want to be able to use as a backup
charger for a 12 volt battery bank that is usually charged by solar
panels. Need a hi capacity battery charger ~ 20amps to runoff the
240volt petrol powered unit.

Would a number of older style 240 volt to 12 volt Halogen transformers
run thru a bridge rectifier work? Do they have a predictable waveform
and frequency so that the AC output voltage (11.5VAC) can be multiplied
by 1.4 to give the DC voltage minus 1.4 volts (forward voltage of diode
x2) = 14.56VDC

The more modern "electronic" Halogen transformers have square waves and
high frequency 20-32KHz and ? need a fast recovery bridge rectifier but
would not develop 14volts DC. Please advise.

I wouldn't root around with it. Think about how many $$$ you have tied up in
that battery bank, and go buy an industrial charger to run off your 240V gen.