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Miscellaneous - list of circuit diagrams
This is a simple Laser communication system. It can transmit and receive signal from any audio device.
author: Marin Lukas - Croatia visits: 66 
This circuit will provide an output in Binary Coded Decimal from any of the input switches. The input switches may be expanded to 16 switches, providing a Hexadecimal to BCD conversion
author: Ron J visits: 61 
the circuit consists of a phase locked loop (CMOS 4047) wired as a 22KHz oscillator
author: Graham Maynard and Andy Collinson visits: 57 
This circuit provides a delayed visual indication when a door bell switch is pressed
author: Andy Collinson visits: 53 
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: 50 
The simple circuit emulates a similar conjuring trick which sells for hundreds of Pounds. The trick seems to do the almost-impossible from an electronic point of view, let alone from the point of view of common sense
author: Rev. Thomas Scarborough visits: 50 
A Simple Splitter Driving Two (or even more) PC Monitors
author: Miroslav Adzic visits: 46 
This circuit takes an ordinary loudspeaker and allows it to be used in reverse, as a microphone
author: visits: 41 
Circuit with a variable pitch and a relatively loud 82 dB miniature piezo beeper. The circuit is very simple and can be easily assembled in half an hour
author: Tomaz Lazar - Ljubljana, Slovenia visits: 38 |
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