In 2007 I stumbled upon a very long time on a site I’ve found the power supply before you archive projects in time, but I want to share my archives for disorderly after a while :) I just found files

Circuits one most of us know by now that classical positive regulator IC on the rules of the LM350 LM317 L78XX but the designs are very interesting, for example, 7805 and 7806 5v-6v positive regulator IC with 0.2V …. 30 volts 0.4 … 4 amps adjustable short-circuit proof power supply made ​​of all projects circuit pCB schematics and layout drawings photos available there are many different methods have been used to examine the benefits in

Adjustable Power Supplies Projects

• +0,2V… +30V 0,5…4A L7805 L7806
• 0…+30V 0,3…3A LM350
• 1,25…30V 0,5…5A LM317

Stabilized power supply with a continuously variable voltage and output current in the voltage range 0 .. +30 V field of electricity and 0.3 … 3A. The power supply system uses an additional stabilizer properly aligned, which was achieved thanks to a very good stabilization of the output voltage at the maximum load current over the entire range of the regulated voltage. At the same time an increase in attenuation achieved an output of the power supply ripple. The power supply has a thermal protection in the form of additional cooling heatsink along with the possibility of excluding an output of the power supply voltage in excess of the critical temperature of the heat sink. The power supply uses a monolithic LM350 adjustable voltage regulator. One version of the power supply when properly installed according to the scheme and when you start requires no adjustment and is immediately ready for operation

Stabilized power supply with adjustable voltage smoothly and output current in the range of 1.25 … 30V / 0.5 … 5A. The power supply system uses an additional stabilizer properly aligned, which was achieved thanks to a very good stabilization of the output voltage at the maximum load current over the entire range of the regulated voltage. At the same time an increase in attenuation achieved an output of the power supply ripple. The power supply has a thermal protection in the form of additional cooling heatsink along with the possibility of excluding an output of the power supply voltage in excess of the critical temperature of the heat sink. The power supply uses a monolithic LM317T adjustable voltage regulator.

Interesting Power Supply Circuits Desings schematic pcb files :

FILE DOWNLOAD LINK LIST (in TXT format): LINKS-7920.zip