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 […]
Power Supply Circuits
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 […]
5 Watt LED Driver Circuit (SMPS)
This post shows you how to build a power supply to directly power bright LEDs from your wall outlet. It is made especially for white LEDs, but it can also work with other colors like blue, green, red, yellow and even ultraviolet UV. What is a 5 Watt LED Driver Circuit: A 5 Watt LED […]
SMPS Halogen Lamp Circuit
SMPS Halogen lamps usually need transformers to work. This guide is about a new kind of transformer that uses a switching power supply. It is simpler than older transformers and works with other light bulbs too, as long as they do not use radio waves RF. This new design also saves energy. What is a […]
Dual 35V 300 Watt SMPS Circuit
Designing a high power dual 35V 300 Watt SMPS circuit demands careful consideration of parameters such as power, resistance and voltage to achieve optimal performance. What is a Dual 35V 300 Watt SMPS Circuit: A Dual 35V 300W SMPS Switched Mode Power Supply circuit is a power supply design capable of delivering a dual output […]