And how long it takes to charge depends on the battery. If you are charging at about 5A then it will take about an hour to charge a 5AH battery from stone dead, for example.
I need a circuit of 12V battery charger that has a high output power how should i do it with this circuit? Is this the highest output power of the circuit? Thank you for the help. :)
I have a transformer 12V 6A. Is it okay? And the TRIAC is BT136-600D. I dont know where to put the heatsink because it says that it is for 'U1' I don't know where U1 is. Please reply.
The heatsink is installed on Q1. Sorry for the mistake in the parts list.
Doesn't your electronics store have a parts catalog with substitutions? Find out what line of semiconductors they sell and look up the equivelant TRIAC from that company. Any TRIAC of similar specs will do.
Thank you. :) Can you please explain to me how the circuit works, current flow and the functions of the components? Thank you so much for the help. :)) God bless
I have explained the circuit at least 10 times on this forum. I searched for "battery charger explanation" and came up with this topic which covers the circuit in detail:
I didn't connect the battery i just measured the output voltage. I removed the potentiometer because i thought it is just for the changing output voltage. I only need a 12V output. What should i do? Thanks for the help.
You are only getting 8V because you have not connected a battery. Because it only uses a half wave rectifier, there will only be a voltage at the output on positive half cycles. With no smoothing, you are reading 50% of the mean level of the rectified RMS voltage - less the voltage drops of the rectifier and the gate-emitter of the triac - and the reading you are getting is roughly correct.
Put the circuit back as it should be and then connect a 100µF 25V cap across the output. It should then read OK. Adjust the output voltage to 13.8V and you are all set to charge the battery. You can leave the cap connected if you want to.