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Led display digital Voltmeter circuit diagram


author: Smart Kit
visits: 180147
Metal Detector circuit diagram


author:
visits: 103189
Function Generator circuit diagram


author: Circuit Exchange International
visits: 71190
Multi Wire Cable Tester circuit diagram


author: Andy Collinson
visits: 48177
Electronic Stethoscope circuit diagram


author: Audioguru
visits: 48076
Simple but reliable car battery tester circuit diagram
This circuit uses the popular and easy to find LM3914 IC. This IC is very simple to drive, needs no voltage regulators (it has a built in voltage regulator) and can be powered from almost every source.

author: Jonathan Filippi
visits: 46879
Digital Radar Speedometer circuit diagram


author: Serge Saati
visits: 44686
Electromagnetic field detector circuit diagram


author: Andy Collins' Circuit Exchange
visits: 31335
Capacitance Meter circuit diagram


author: Hawker, P Amateur Radio Techniques, Seventh Edition, RSGB, 1980
visits: 30002
Crystal Tester circuit diagram


author:
visits: 29435
page: 1 2 3 4


project categories:
folder Audio (49)
folder Power & high voltage (43)
folder Radio (23)
folder Light & LED (31)
folder Tools & measurement (40)
folder Telephone (18)
folder Automotive (10)
folder Microcontrollers (12)
folder Sensors & control (47)
folder Timers & oscillators (40)
folder Miscellaneous (26)

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project subcategories:
All subcategories
testing equipment
measuring devices
other tools

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