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Miscellaneous - list of circuit diagrams
A new and improved version of Thomas Scarborough's wart zapper
author: Thomas Scarborough visits: 17250 
A single chip metal detecor with a range of a few inches
author: Andy Collinson visits: 5564 
This circuit will power a 6 inch 4 Watt fluorescent tube off a 12 volt supply, consuming 300 mA
author: Rev. Thomas Scarborough visits: 726 
A basic Imfra Red Link for audio communication for distances upto 3 metres
author: Milan Markovic visits: 603 
This is a simple Laser communication system. It can transmit and receive signal from any audio device.
author: Marin Lukas - Croatia visits: 550 
A simple device to indicate various levels of hot water in a tank.
author: Andy Collinson visits: 548 
Using a single cable such as speaker wire or doorbell cable, this circuit can be remotely positioned
author: visits: 417 
This circuit can be used to remotely monitor a loudspeaker, alarm, or audio source for presence of an audio waveform. It can also be directly connected across loudspeaker terminals used as a peak indicator
author: Andy Collinson visits: 405 |
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