Latching Continuity Tester
This latching continuity tester detects intermittent (and steady state) opens and shorts. The tester will detect and latch on an intermittent condition with a duration of less than a millisecond. In addition, it provides both visual and (defeatable) audio indicators, uses only one inexpensive and easy-to-find IC, and can be built very cheap if you have a well-stocked junk box.
   Latching Continuity Tester
Check out www.sentex.ca

 
 
 

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