I want to create small circuit for regulate when the higher than 14V DC.. Please help me if you can..
actually I hope to use this to Alternator, for charge the lead acid batteries. then 200Ah batteries are connect as parallel so I want to charge the batteries without over charging. because I want regulate alternator output, using TIP122.Need regulation accuracy, maximum current, maximum input voltage.
What does it do below 14v?
actually I hope to use this to Alternator, for charge the lead acid batteries. then 200Ah batteries are connect as parallel so I want to charge the batteries without over charging. because I want regulate alternator output, using TIP122.How is the input V/I?
How is the Vout?
How many TIP122 do you have with you? Because a single of those transistors is only capable of handling 5A at most. And that's under ideal conditions. You'd end up with a rather inefficient circuit with numerous components to accomplish what you want.actually I hope to use this to Alternator, for charge the lead acid batteries. then 200Ah batteries are connect as parallel so I want to charge the batteries without over charging. because I want regulate alternator output, using TIP122.
Input voltage is not constant value. it will change according to RPM of alternator. maximum current 80A.
The circuit can't be that simple, because you want to build the batteries charger with high current.actually I hope to use this to Alternator, for charge the lead acid batteries. then 200Ah batteries are connect as parallel so I want to charge the batteries without over charging. because I want regulate alternator output, using TIP122.
Input voltage is not constant value. it will change according to RPM of alternator. maximum current 80A.
How is the input V/I?
How is the Vout?
yes of course it has a regulator, But I want to build new oneNormally alternators have a voltage regulator.
Doesn't yours?
The circuit can't be that simple, because you want to build the batteries charger with high current.
it doesn't matter. I want to just create a circuit for apply Alternator. I haven't idea how to use MOSFET for regulate the voltage. please send me your idea. It will more helpful to me.How many TIP122 do you have with you? Because a single of those transistors is only capable of handling 5A at most. And that's under ideal conditions. You'd end up with a rather inefficient circuit with numerous components to accomplish what you want.
There are other options out there, such as MOSFETS. Is the use of TIP122 for your application a must?
Then use that to give the desired output voltage.yes of course it has a regulator
out put voltage must be 14VThen use that to give the desired output voltage.
It will be more efficient and take less parts.
yes I want to charge 12 V BatteriesVoltage regulator for Alternator:
Vin = input voltage unknown (range?).
Iin = input current 80A.
Vout = input voltage unknown (14V?).
Iout max = 80A * eff% = ? A (80A?)
12V Batteries:
Iout max = 200Ah
Vout = 14V
And how is that not achievable by regulating the alternator output voltage?out put voltage must be 14V
14V is not optimum for charging 12V lead acid batteries, nor is charging them in parallel.actually I hope to use this to Alternator, for charge the lead acid batteries. then 200Ah batteries are connect as parallel so I want to charge the batteries without over charging. because I want regulate alternator output, using TIP122.
by Duane Benson
by Jake Hertz