High current dc power supply circuit diagram. The circuit of this diode current limiter for a linear power supply is particularly simple and accordingly the electronic circuit design is also very straightforward. High current 5a up lm338 variable supply 5a. I personally love this ic yes its not a transistor a lot not because it server it purpose well but because its cheap easy and never disappoints you while making a regulated dc power supply. Howto repair switch mode power supplies 1.
Easy and durable circuit. Because of using lm338 ic 741. For a transformer that can supply at least 30 amperes and voltage secondary coil should not be less than 18 volts. Basics and block diagram of a psu duration.
Amplifier power supply using high current transformer. The value of the series resistor can be calculated so that the voltage across it rises to 06 volts the turn on voltage for a silicon diode when the maximum current is reached. High current power supply circuit dc power supply circuit in hindi. 12 volts138v high current 30a25a20a15a for ham radio dc easy but well 0 30v 5a dc adjustable regulator using ic 723 2n3055x2.
The output of the op amp is connected to the base of a power transistor ignoring the darlington pair which controls how much current can flow through the circuit. Such a supply i have now decided to build. 0 12v variable power supply at 3a. For output currents ranging from 25 amperes to 10 amperes.
Designing power supply circuits simplest to the most complex last updated on may 31 2020 by swagatam 70 comments the post details how to design and build a good work bench power supply circuit right from the basic design to the reasonably sophisticated power supply having extended features. Sometimes you need a low voltage power supply of very high currents hundreds of amperes whether for spot welding heating or melting metals starting the vehicle engine or other physical experiments. Power supply circuit has a dc output voltage that can be regulated output from 0v up to 35v and it also depends on the input voltage. From all principles above we have circuits applications as shown in figure 4 if you want to add the ic lm338 enabling them to be higher current.
Make a power supply circuit using ic lm723 adjustable regulator is very nice to use the power supply that requires a large voltage ampere. Lets make a high current power supply with lm317 voltage regulator which can supply upto 5 amplm317 is one of the oldest most used and wonderful linear voltage regulators. High power dc regulator 4 20 volts 20 amps by lm338.