Hi,
I need to get the reasoning behind the efficiency of the charging circuit.
I understand the high frequency charge / discharge to help a Lead Acid recover from sulphation.
But when you are charging, either during the de-sulphation process or just plain charging you are using an amplifier in its linear mode.
Please consider this bit of your circuit consisiting of the amplifier.
You have 30Vdc as supply, if you are charging a lead acid battery, the amplifier will be outputing at least 13.8Vdc.
If the charging current is 4Adc then;
Total Input Power to the Amp is;
30V * 4A = 120Watts.
Output Power to the battery is;
13.8V * 4A = 55.2 Watts
so 120 - 55.2 = 64.8W is dissipated in the amplifier, I hope it has a heatsink.
Efficiency = (Output Power / Input Power) * 100 = (55.2 / 120) * 100 = 46%
So your charger efficiency is 46%
Tom... 