LM317 based Regulated Power Supply
This is a Regulated Power Supply based on the LM317 IC. It will need a Boost Power Transistor and heatsink for higher currents. It is a versatile building block for stable instrumentation supplies. Consumer...
Category: Power-Electronics
24V and 25V Power Supply with 2A Current
I am looking for a 25V Power Supply with 2A current for my Application. A regulated supply. TA – US Here is a simple to build regulated power supply. The two diodes are to...
UPS and Inverter Schematics
Do you perhaps have an inverter schematic for a sinewave inverter or stepped squarewave using the SG3525 chip. I’m also interested in connecting the inverter to the grid via a solar panel. I hope...
Making Coils and Transformers
Message – Can we make Coils and small transformers at home. I have copper wire and some lamination in my stores. – 2005 IJ – AF Making Transformers with good isolation and safety is...
Battery Backup Supply
This is a 9V power supply which will work even on power failure. It uses a rechargeable battery and regulators. A transformer with 15-0-15 AC volts output is required. From my Power Electronic Circuits...
Perpetual Candle – White LED Lamp on Ni-Cd
This is a easy to build LED lamp circuit for Learning and building skills. This is the first draft schematic V 1.0. It will need improvements for Higher Power Lighting. I will give a...
Dual Polarity Power Supply
This supply gives both positive and negative outputs. Appropriate Fuses should be used to protect from fire hazard and overload of transformer. Voltage Regulators LM7812 and LM317 You could use LM7824 or LM7815 or...
Voltage Doublers and Multipliers
Voltage multipliers are used to obtain low current high voltage, from an existing AC Source. Step up transformers can be used, but the insulation problems and care that has to be taken for HV...
