![2n3055 transistor short circuit under high load 2n3055 transistor short circuit under high load](https://www.eleccircuit.com/wp-content/uploads/2019/04/40W-transistor-audio-amplifier-circuit-with-PCB.png)
Learn: Fixed voltage regulator working principle Imagine if we use 7815 instead of the Zener diode.Īnd use a power transistor to increase the output current more. It is a Zener diode and transistor regulator that we are familiar with well. We need helping from power transistors, 2N3055.įirst, see this circuit. Now We should use LM7815 because it is popular than that one. And, If there are overload or short circuit. Inside this IC has short circuit protection and prevents overheating.Īs a result, this circuit can keep the level output voltage as well. It keeps the level of constant voltage of 15V. This 13.8V power supply circuit uses a regulator IC, LM340T-15. Use the size of 5A fuse is a slow, or Slow blow fuse. It saves money and easy.įor example you want 20,000uF you can use 2x 10,000uF. You may use 10,000uF 25V x 6 connect together in parallel. In 30A output, if you cannot buy a 68,000uF 25V electrolytic capacitor. So, we have a total capacity of 4,700 μF x 5 is 23,500μF. It is enough to use. We may use five of 4,700uF 25V capacitors to connect together in parallel. Equivalent capacitorsīut it may do not for sale. Suppose You want to build 15A output current. With the output voltage of 13.8V. You can choose a variety of devices as you want, follow these steps.ġ. Suppose that you get a big transformer from your grandfather. So you need the least of 30A transformer. We often use the three-terminal regulator IC likes 78xx, 7812, or 7815.īut It is a big size with large components.įor example, the transformer if you want 30A output current. Because it is popular in the transistor power amplifier.Ī linear power supply circuit is a better choice. Imagine, you have a lot of power transistors, 2N3055. Sometimes you may have these components in your house. So easy to buy in locals stores near us, and cheaper. We want the circuit that uses normal parts. The high current 13.8V power supply circuit Concept of circuit picking Which you may apply by changing the voltage and current as needed. Such as A large DC motor, car audio system, and others. It will very proud.īesides, this power supply circuit is also useful as a wide variety. And when completed, runs in its function. It will be a great time while creating this project. But if you build them with your own or your friends. Of course, you can buy a power supply that simple and effective with a variety of sizes. Because of Good performance, the output voltage of 13V to 14V depending on the load.Īlso, you can change/add components to set the output current of 5A, 10A, 15A, 20A, 25A, 30A. And I highly recommend this high-current power supply circuit.