simplet - Simple Component and Continuity Tester This...

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Simple Component and Continuity Tester This simple project may be used for testing components, as well as checking circuit board tracks, wires and connections for continuity (conduction). It tries to pass a small current through the item being tested and the LED will light brightly, dimly or not at all according to the resistance of the item: LED bright means the resistance is low , less than about 1k LED dim means the resistance is medium , a few k LED off means the resistance is high , more than about 10k When not in use the 9V PP3 battery should be unclipped or the crocodile clips attached to a piece of card or plastic to prevent them touching. You could add an on-off switch in the red wire from the battery clip and this may be the best option if you mount the simple tester in a box. Parts Required • resistor: 390 • red LED 5mm diameter, standard type • battery snap for 9V PP3 • crocodile clips: miniature red and black • stripboard: 5 rows × 7 holes Stripboard Layout • • • • 390 9V PP3 battery clip Red LED (long lead is +) Miniature crocodile clips red black Testing stripboard, PCB tracks, wires and connections Connect a crocodile clip on each side of the suspected fault: LED bright means there is a connection .
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This note was uploaded on 08/27/2008 for the course MECH 1010 taught by Professor Hoffman during the Spring '08 term at Temple.

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simplet - Simple Component and Continuity Tester This...

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