Posts Tagged ‘Cable Tester’
Simple Continuity Tester with Classic Flip-Flop Circuit
The schematic diagram below describes a simple continuity tester circuit. This circuit is used to test if two point is electrically connected by sounding a tone, which the pitch is inversely proportional to the resistance of the tested points. This circuit is designed for high resistance circuit, but however, this circuit can be used for …[Read More]
Voltage and Current Limited Audible Continuity Tester
Using this continuity tester circuit, a failure of PCB tracks be examined without looking directly at the tracks routing, which is can be very frustrating. The indication of this circuit is done by an audible alarm (a buzzer). This circuit can be used to indicate continuity below any resistance value up to 35 ohms by …[Read More]
This is a schematic diagram of auto fuse monitor circuit. This circuit is very useful for automobile application, checking a live fuse without wasting any electrical power if the fuse is working fine. This circuit can check the fuse without removing the fuse from the working circuit. When the fuse is being tested, this fuse …[Read More]
Multilevel Continuity Tester
This continuity tester not only show if a connection is continue or not, but also determine the range of its conductivity level. Here is the schematic diagram of the circuit: Finding wiring trouble is easier if we know the quality of the connection, and this continuity tester give rough estimation. Small transistors will be sufficient …[Read More]
Cable Reflection Tester
This is a Cable Reflection Tester circuit. This circuit can be used to check coax cable runs for shorts or even impedance mismatches. This circuit will send a pulse down the circuit, then the return signal can be checked on an oscilloscope. The distance can be determined by using this equation:distance = time x speed …[Read More]
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