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Window Foil Burglar Alarm Circuit

admin May 30, 2010 4 Comments
Circuit Description The circuit diagram of window foil burglar alarm has been published here. The main parts of this circuit are SCR H1 (TYN 612) and transistor Q1 (BC 107). This burglar alarm can be fitted in windows to...
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Simple Tweeter Crossover Circuit

admin May 30, 2010 1 Comment
Circuit Description The circuit diagram of tweeter crossover circuit has been described here. The advantage of this circuit over circuits of single coil speaker is that it can handle both high and low frequency signals simultaneously. A tweeter circuit...
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