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Miscellaneous - list of circuit diagrams
Based on "Application Notes" for LM317LZ, flashes an LED using the phase-shift principle
author: Andre visits: 31 
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: 28 
This circuit allows audio monitoring of a remote location and so doubles as a room monitor or baby alarm
author: Andy Collinson visits: 27 
This circuit will illuminate a LED if one of your telephones is in use. It should work in all countries (Including UK) that have a standing line voltage above 48 Volts DC
author: Miroslav Adzic visits: 23 |
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