Test Multiteste LEDs Polarity Continuity Resistance Circuit
What do you think of building a simple LED tester, so you can test the integrity of the components before soldering directly to the PCB. It reduces the task of testing the meter components using the circuit with LED gives an indication about the good or bad condition of the component. Test Multiteste LEDs - Polarity - Continuity - Resistance Circuit When a component is placed in the circuit and establishes electrical continuity T1 receives base current through R1. When T1 conducts, the green LED turns on and off the red LED. This indicates that the component to be tested is good. If the component is bad, will not have electrical continuity and T1 remains off. In this state only the red LED light indicating that the component is bad. Polarity Connect the red end of the positive range to the circuit board and to test the black edge point. Circuit board under test to be lit Green LED ON - positive feed. Green LED off and red LED - or no negative supply voltage. Continuity Connect bo...