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About the DIY Schematics category

The secret DIY schematics vault is here! Here is any of the schematics you are interest:

Alarms and security related schematics
Audio power amplifiers
Audio preamplifiers
Automative and car related schematics
Data acquisition and data logging schematics
Filter schematics
Games and fun stuff (schematics)
Infrared based schematics
Laser related power supplies and data transmission
LED related schematics
Lighting schematics
Medical and health related schematics
Microcontroller based schematics
Misc audio (also see Music, Amplifiers, Preamp)
Miscellaneous schematics
Model and remote control schematics
Motor and general control schematics
Music related schematics (also see Audio)
PC related schematics
PDA interfaces and related schematics
Power supplies and control schematics
Radio-frequency schematics (also see Transmitters)
Solar-powered schematics
Telephone and intercom related schematics
Test equipment schematics
Timing, oscillators etc. (schematics)
Miscelaneous schematics
Transmitter schematics
Video related schematics