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diode test
diode test
When checking in the diode mode, the reading you are getting one way is the forward voltage drop of the diode, an infinite reading (OL on some meters) when the probes are in the opposite positions is ok. Make sure fingeres aren't in way and you have a good connection. if the reading varies in the forward position, could have something else in the circuit affecting the diode. if reading starts low and climbs to infinite, could be a capacitor in the circuit (automotive terms: condenser). Infinite reading both ways, diode is bad, 0 or near zero reading diode is shorted or something in circuit diode is in is shorted. check diode out of circuit if possible.
diode test
When checking in the diode mode, the reading you are getting one way is the forward voltage drop of the diode, an infinite reading (OL on some meters) when the probes are in the opposite positions is ok. Make sure fingeres aren't in way and you have a good connection. if the reading varies in the forward position, could have something else in the circuit affecting the diode. if reading starts low and climbs to infinite, could be a capacitor in the circuit (automotive terms: condenser). Infinite reading both ways, diode is bad, 0 or near zero reading diode is shorted or something in circuit diode is in is shorted. check diode out of circuit if possible.