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Sequential Tilt-Motion Lock Circuit Diagram
Electronic Fuse Employs A Relay
A Simple Hearing Aid
Power Supply for USB Devices
Simple Audio Power Meter Circuit
Water-Tank Level Meter Sensor
Audio Controlled Mains Switch
Isolated Fuse Fail Indicator
6 to 15V DC to DC Converter
Versatile DC-DC Converter
Stable USB Power Supply
Low Loss Step Down Converter
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Build a LED "Halogen" Lamp for Motorbike Headlamp Replacement
The post explains a simple 21 watt LED lamp circuit module which can be used as a direct replacement for a standard halogen lamp in motorc...
Simple +12v to +9v converter Circuit Diagram
This little circuit uses a LM317 variable voltage regulator to adjust the input voltage down to +9 volt, or whatever else you need. Ju...
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12v Light / Dark Switch
Often, for certain low voltage lighting systems; you would like to turn off the lights during the bright light of the day. Most commerci...
Car Interior Lights Delay
Most cars do not have delayed interior lights. The circuit presented can put this right. It switches the interior lights of a car on and of...