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Fluke 43B Application Guide

Fluke 43B
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Fluke 43B
Applications Manual
14
Testing a Diode
Check a diode in both forward direction and reverse direction. Useful for
checking whether the diodes in a rectifier are still intact.
1
Open the main menu.
2
3 Select (diode)
4
Make connections as shown below:
Observe the voltage in forward direction (A). It should read about 0.5V.
Now turn the diode in reverse direction (B) and look at the display again.
The Fluke 43B should display OL (Over Load), indicating a very high
resistance. If not, the diode is faulty and should be replaced.
OHMS
/
CONTINUITY
/
CAPACITANCE
A
B

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Fluke 43B Specifications

General IconGeneral
CategoryPower Quality Analyzer
InterfaceRS-232
Volts AC/DCYes
OhmsYes
ContinuityYes
Diode TestYes
CapacitanceYes
Harmonics MeasurementUp to 51st harmonic
DisplayLCD
Battery LifeApproximately 6 hours
Weight1.1 kg (2.4 lb)
Data StorageYes
Amps AC/DC0.1 to 1000 A (with clamp)
Power MeasurementW, VA, VAR, PF
Dimensions50 mm
Current Measurement RangeVia current clamp accessories (not built-in)

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