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Miscellaneous - list of circuit diagrams
The LED Torch is based on a 7555 timer running in astable mode
author: Rev. Thomas Scarborough visits: 828 
Using a single cable such as speaker wire or doorbell cable, this circuit can be remotely positioned
author: visits: 758 
Based on "Application Notes" for LM317LZ, flashes an LED using the phase-shift principle
author: Andre visits: 757 
the circuit consists of a phase locked loop (CMOS 4047) wired as a 22KHz oscillator
author: Graham Maynard and Andy Collinson visits: 718 
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: 688 
This circuit provides a delayed visual indication when a door bell switch is pressed
author: Andy Collinson visits: 676 
Based on the Maxim MAX660, designed to power three 3mm/5mm white LED's from 3V (1.5V min) , intended for replacing incandescent bulbs in small torches.
author: Andre visits: 652 
This circuit relies upon the extra high input impedance of a FET, and also demonstrates
the gate terminals sensitivity to changes in voltage
author: Andy Collinson visits: 635 
A Simple Splitter Driving Two (or even more) PC Monitors
author: Miroslav Adzic visits: 621 
This circuit allows audio monitoring of a remote location and so doubles as a room monitor or baby alarm
author: Andy Collinson visits: 593 |
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