Archive for category: Power Supply circuits

12V 50W Switching Regulator by UC3844N

Power Supply circuits | By: Diagram mania

Here is circuit Swithing regulator power supply 12V 50W. It simple circuit and low cost use IC UC3844N flyback converters. Can work over a universal AC line input range 90-264 VAC and provides a 12VDC output at more then 4A load. Detail from source: This is a simple low-cost 50W off-line switching power supply, which […]

200 Watt Modified PC Power Supply 13.5 Volt 14 Amp

Power Supply circuits | By: Diagram mania

200 Watt Modified PC Power Supply 13.5 Volt 14 Amp The external 230 Volt AC power ON/OFF switch is removed and bypassed. Old unused outputs are removed. Over voltage protection changed to only protect one output at 16 V, Voltage regulating resistor net changed to only monitor a single output, Do it like this: Cut: […]

3.3V regualated supply using 6V

Power Supply circuits | By: Diagram mania

The figure shows the circuit, shamelessly copied off the datasheet provided by Microchip. I have been more inventive with the parts. I had to get a modern P channel MOSFET from Texas Instruments because old hard drive boards were seriously deficient in this one critical component. However, using the parts as specified would be necessary […]

Antec ATX12V Power Supply Tester

Power Supply circuits | By: Diagram mania

Antec ATX12V Power Supply Tester 77203 – A simple tool for testing ATX12V (v 1.3 and v 2.0) power supplies without fussing with voltmeters and probes. Simply plug the power supply outputs into the 24-pin (or 20-pin) connector to verify voltage of each ATX12V rail. Green for normal, yellow for insufficient, and red for over […]

Switch-Mode Power Converters: Design and Analysis

Power Supply circuits | By: Diagram mania

This book introduces an innovative, highly analytical approach to symbolic, closed-form solutions for switched-mode power converter circuits. This is a highly relevant topic to power electronics students and professionals who are involved in the design and analysis of electrical power converters. The author uses extensive equations to explain how solid-state switches convert electrical voltages from […]

The variable High-Voltage Power Supply 0-3kV

Power Supply circuits | By: Diagram mania

You’ll need a variable high-voltage supply to operate the detector. The transformer is uncritical and easy to build. Use a E or EI core without air gap with an AL value of approx. 2000nH/W2. The primary coil has 25 windings of 0.7 – 1 mm magnet wire; the secondary coil has 500 windings of 0.2 […]

LM2695 – High Voltage (30V, 1.25A) Step Down Switching Regulator

Power Supply circuits | By: Diagram mania

The LM2695 Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient, buck bias regulator capable of supplying 1.25A to the load. • High Efficiency Point-Of-Load (POL) Regulator • Non-Isolated Telecommunication Buck Regulator • Secondary High Voltage Post Regulator Datasheet Output Current 1250 mA Output Min 2.5 Volt Output […]

0-1000V Regulated High Voltage Power Supply

Power Supply circuits | By: Diagram mania

Another power supply that can be used for the Geiger-Müller tube variant of the cosmic ray muon detector. If the specific transformer mentioned in the schematic is not available to you, any transformer with the specifications primary 117VAC, secondary 6.3VAC CT (center-tapped) should work. In this case you might have to choose a different drive […]

12V Switching Car PSU by UC3843 + 74LS02

Power Supply circuits | By: Diagram mania

Here is circuit power supply switching 12V. For Car PSU use IC UC3843 and mosfet IRFZ44N. It is nice circuit for electronics PC MP3 Player. System control by digital circuit IC 74LS02 The next version will be much like the V2, except for a few changes: * Added a trimmer (R13) to the R8/R9 voltage […]

12V Switching Car PSU by UC3843

Power Supply circuits | By: Diagram mania

The power supply accepts 8 to 16 volts and produces 12 volts. The topology is SEPIC (single-ended primary inductance converter), the advantage being the ability to convert up or down with a minimum of parts and maximum efficiency. [...] the power supply is good for about 8 amps output and can power the system while […]