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Simple Alarm Circuit using 12C509

alarm circuit diagrams Simple Alarm Circuit using 12C509, 2N7000, 78L05

Nikon gps circuit

Nikon gps circuit Nikon gps circuit There are also versions elsewhere on the internet that utilise bluetooth serial modules to allow the GPS to remain in a backpack completely out of the way – either more expense or more complicated DIY though I’d have thought. Looking at the wealth of similar projects on the net […]

3 way active crossover , 4 Way Crossover Schema

3 way active crossover , 4 Way Crossover Schema 4 way active crossover, Audio Trebel, Audio Midel, Audio Sub wofer, Audio Midel Bas    

Make a simple power amplifier-BC547 – 1watts

Make a simple power amplifier-BC547 – 1watts This circuit is probably my most used AF power amplifier circuit in my own homebrew equipment.This circuit will deliver the full 1 watt output with about 400mV RMS of drive voltage, but for other input levels you can set the gain by adjusting the value of R8. The […]

Phone Line Controller circuit

Phone Line Controller circuit using CM8870, PIC16F84A, 4N35, BC547, 7805

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