# 24V Battery Charger Schematic

Posted on Feb 6, 2014

240/24Vac(rms) transformer was used. After rectification and filtration i got about 30Vdc. Therefore the transformer and diode rating should be well chosen to meet your demand At the current limiting stage, transistor U1, Q1 and resistor R1 plays the vital roll in the current limiting; When U1 switches on it short circuits the gatevoltage of Q1 thereby restricting current flow through the battery under charge.

U1 will only switch when Voltage across it`s base-emitter Vbe is up to 0. 7V. the voltage drop across R1 determine this, if the voltage drop across R1 is up to 0. 7V then U1 switches on then, I(current thru batt)=0. 7/R1(sense resistor). Ohms Law. The float charge stage come to play when the Battery Voltage builts up to 28Vdc. In this design once the voltage gets to 28Vdc, it is considerably large enough to make the zener diode reach it breakdown voltage. And once this is done U2 switches on and consequently short circuit gate voltage of Q1. The charger is now said to float charge. i am also make a 24v 7amp battery charger but i have also same problem i am using irf250. also r1 0. 1om how many wats resister using please sent me replay about this problem in my gmail account. I have a DC 24v 5amp electric motor taken from an old mobility scooter that had been powered by lead-acid batteries. I need a power supply to run off the mains to drive this motor for a new application. I would like to build my own power supply therefore can I use something like the 24v charger designed by `maxolous` hi sir i want to build this charger but i have a small problem can i use the same inverter transf to charge and can i replays 450 ohms resister with 470 ohms hi sir i want to build this charger but i have a small problem can i use the same inverter transf to charge and can i replays 450 ohms resister with 470 ohms please, can you send to my...

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