CircuitsRadio, a resource for engineers, hobbyists, inventors & consultants, is a collection of 12,000+ electronic circuits
or electronic schematics cross-referenced into 500+ categories to find quick solutions
for electronic design problems. Bad links are removed and new circuits or schematics are added frequently.
This site contains lots of FREE electronic circuits (schematics) & do-it-yourself (DIY) circuit diagrams for hobbyists, students, professionals etc. covering a wide range of categories in electronics like audio, music,home/garden related,computer hardware,radio,robotics etc to name a few. There are also links to sites that offer hobby electronic kits and other electronics hobby related stuff. Use the menu on the left to browse different circuit categories.
OVER 10.000 SCHEMATICS & DIAGRAMS
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Electronic schematic: ±4 TO ±18 VOLT, 500 MILLIAMPERE D.C. POW...
±4 TO ±18 VOLT, 500 MILLIAMPERE D.C. POWER SUPPLY. This is a simple, general-purpose power supply intended for laboratory applications that require both a positive and negative current. The circuit uses commonly-available integrated circuit regulators that provide integral thermal overload protection as well as safe-area limiting.
