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Power Supply Circuits

Simple 9V Transistor Inverter Circuit

Last updated on 4 July 2026 by Admin-Lavi Leave a Comment

This is Simple 9V Transistor Inverter Circuit using 9V battery, which is very small and easy to make and which helps to understand DC to AC working. Circuit uses only few low cost parts and its output power is very low and also it is only for testing and learning and further is useful for […]

Filed Under: Hobby Circuits, Inverter Circuits, Mini Projects, Power Supply Circuits, Transistor Circuits

Soft ON Circuit for 12V Halogen Lamp

Last updated on 4 July 2026 by Admin-Lavi Leave a Comment

In this post halogen lamp draws very high current at switch ON, then cold filament resistance is very low and this causes sudden inrush current. Lamp life becomes short, then this circuit protects lamp and it also protects outside fuse and switch indirectly; therefore, Soft ON Circuit for 12V Halogen Lamp reduces this problem. Lamp […]

Filed Under: DIY Projects, LED and Lamps, Power Supply Circuits

35V Dual Output Power Supply Circuit

Last updated on 4 July 2026 by Admin-Lavi Leave a Comment

This tutorial teaches us about the 35V Dual Output Power Supply Circuit, the circuit outputs is plus 35 volts and minus 35 volts, powering audio amplifiers and op-amp circuits.  Circuit also uses transformer, bridge rectifier, big filter capacitors and further, its output becomes +35V, -35V and ground. Circuit Working: Parts List: Components Values Quantity Capacitors […]

Filed Under: DIY Projects, Hobby Circuits, Power Supply Circuits, Tutorials

12V 5A Linear Power Supply Circuit

Last updated on 3 July 2026 by Admin-Lavi Leave a Comment

This is a simple and easy to make 12V 5A Linear Power Supply Circuit, as it uses transformer, bridge rectifier, filter capacitor, control transistor and regulator IC. Circuit gives clean 12V output and it is good for LED strips, small radios, car stereo tests, chargers and hobby projects; also the circuit is easy to build […]

Filed Under: DIY Projects, Power Supply Circuits

Simple 5V to 3.3V Converter Circuit using IC LD33V

Last updated on 3 July 2026 by Admin-Lavi Leave a Comment

Here, is an article for Simple 5V to 3.3V Converter Circuit using IC LD33V, also 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 […]

Filed Under: Mini Projects, Power Supply Circuits, Voltage Regulator

Stable 5V 3A Power Source Circuit using IC LM350

Last updated on 3 July 2026 by Admin-Lavi Leave a Comment

This Stable 5V 3A Power Source Circuit using IC LM350 is to make stable 5V 3A DC output from AC mains; also it uses transformer, bridge rectifier, filter capacitors and LM350 adjustable regulator. Here, IC LM350 can give up to 3A current which is good for microcontroller, charger, LED strip and many circuits; further the […]

Filed Under: DIY Projects, Power Supply Circuits

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