In this post halogen lamp draws very high current at switch ON. Cold filament resistance is very low and this causes sudden inrush current. Lamp life becomes short with this circuit protects lamp and it also protects outside fuse and switch indirectly. Soft ON Circuit for 12V Halogen Lamp reduces this problem. Lamp voltage rises […]
Power Supply Circuits
35V Dual Output Power Supply Circuit
This tutorial teaches us about 35V Dual Output Power Supply Circuit. This circuit gives plus 35 volt and minus 35 volt. It is used for audio amplifiers and op-amp circuits. Circuit uses transformer, bridge rectifier, big filter capacitors. Output becomes +35V, -35V and ground. Circuit Working: Parts List: Component Specification Quantity Capacitors Electrolytic 4700uF 50V […]
12V 5A Linear Power Supply Circuit
This is a simple and easy to make 12V 5A Linear Power Supply Circuit. It uses transformer, bridge rectifier, filter capacitor, control transistor and regulator IC. Circuit gives clean 12V output. It is good for LED strips, small radios, car stereo tests, chargers and hobby projects. Circuit is easy to build and its parts are […]
Simple 5V to 3.3V Converter Circuit using IC LD33V
Here is an article for Simple 5V to 3.3V Converter Circuit using IC LD33V. This circuit is cheap, works from 5V input and it uses LD33V voltage regulator IC. We just need to take a phone charger and put a charger output to regulator input. And then regulator will gives stable 3.3V output which is […]
Stable 5V 3A Power Source Circuit using IC LM350
This Stable 5V 3A Power Source Circuit using IC LM350 is to make stable 5V 3A DC output from AC mains. It use transformer, bridge rectifier, filter capacitors and LM350 adjustable regulator. LM350 can give up to 3A current which is good for microcontroller, charger, LED strip and many circuits. The unregulated power supply works […]
Simple IC L7660 Dual Power Generator Circuit
This Simple IC L7660 Dual Power Generator Circuit makes dual power from single 5V input. It gives +5V and -5V output. It is useful for op amp circuits, analog circuits and small signal circuits. The design uses ICL7660 voltage converter IC. The circuit is simple and uses only two capacitors. Circuit Working: Parts List: Component […]