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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Light switch warning indicator
Hi,
I am trying to design an audible/visual indicator that beeps every 5 minutes when a light switch is turned on. The complete circuit has to fit behind a light switch plate and so a transformer cannot be used. Any ideas or pointers would be really useful. Thanks. |
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