The LM317 is a chip that controls voltage, but it can only deliver a small amount of current 1.5 amps. We can add another part a TIP35 transistor to the LM317 circuit. This transistor acts like a follower doing whatever the LM317 tells it to do. By adding this transistor the LM317 can control a […]
Power Supply Circuits
How to Build a Simple Solar Cell using a 2N3055 Transistor
Want to learn how solar panels work? Build your own mini solar cell at home! It is a fun project for electronics enthusiasts and uses a common part called a transistor. This is a basic model and wont power your house, but it is a great way to see how sunlight can be converted into […]
Simple Current Limiter Circuit using Transistors
This article shows you how to build a circuit that limits how much power goes to other electronics. It uses two transistors and a special resistor to act like a guard and make sure things do not get overloaded. What is a Current Limiter Circuit using Transistors: A current limiter circuit using transistors is designed […]
Simple Voltage Regulator Circuit using Transistor and Zener
This circuit is like a bouncer for electricity. It uses a transistor like a gatekeeper and a special diode zener diode to make sure the voltage stays steady. The zener diode is like a set point, and the transistor copies that voltage keeping it constant for your electronic devices. This is great for projects where […]
Simple Adjustable Power Supply Circuit using IC LM338
Many electronic devices need a steady flow of clean DC power to work well. This post shows you how to build a circuit that turns messy DC power into smooth, adjustable DC power using a common chip called the LM338. This circuit can take an unsteady DC voltage anywhere from 5 to 34V and turn […]
Simple 220V SMPS Circuit using One Transistor
This guide shows you how to build a simple power supply circuit that plugs into the wall outlet 220V and uses only one transistor MJE13005. It does not need any fancy chips or extra parts to control the power. Instead of those parts, it uses a special diode and a winding on the transformer to […]