Excessive output current of mA without external pass transistor. Better Input supply voltage of maximum 40v. Provide adjustable output from 3v to 37v. Used in making linear or switching regulator.
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If you want to save time, it can be ordered through Amazon. It starts with the lowest parts first, to be beautiful. Easy assembly To start with, followed by a diode, resistor and, respectively height and so on. As the image below soldering lowest electronic components. Be careful! Some components have polarity like electrolytic capacitors, diodes, transistors, etc. They require correct placing.
If they are the wrong polarity. They will get destroyed from reverse voltage. The components layout and wiring of this v variable power supply project. We assembled all parts completely on PCB. This project uses AC power so we must be careful about high voltage. Finally, we have made this project so successful.
This way makes the transistor, not overheat. The output we should connect a 3A fuse in series before to use. Testing We test this project. As the video step by step. Apply the AC power then turn on power switch ON. Measure voltage at the output point, then rotate the VR1 slowly to right, the output voltage starts is 0.
Setting the output is 12V, then Apply a 12V 50W as the load. Measure the current output when load 12V is 3A maximum.
Temperature measurement of transistor operation. How to solve circuit not works If you made this project but it did not work. You do not worry. It is not a problem. It is a process of your electronic learning. You should have fun solving it. Here are some basic guidelines for you. First—No load, No power to this circuit. And Check and Check again with slowly. Surely, something is wrong. Second—If you check all is correct. You try to power to the circuit again.
Then, measure the voltage at. If it is not like this. You should check the unregulated voltage again. Which they include a transformer, bridge diodes, and C1. But it is zero or lower voltage. Show that parallel resistor, R1-R5 are broken. Third—check the circuit again. But Different pinout positions between the Emitter and collector.
LM723 Adjustable Power Supply with Over-Current Protection
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