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(Description)
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==Description==
 
==Description==
 
to be added
 
to be added
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==How to use==
 
[[File:Photo-zener diode tester-with 6V zener diode.jpg|thumb]]
 
[[File:Photo-zener diode tester-with 6V zener diode.jpg|thumb]]
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;Testing a zener diode
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* Turn off the power, make sure the light is out
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* Attach the multimeter, positive to positive (red), negative to negative (green)
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* Set multimeter to DC voltage, at the range you expect the diode to be
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* Attach the zener diode, positive to positive (red), negative to negative (green)
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* Turn on the tester
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* Read the output on the multimeter, and that's the zener diodes reverse voltage
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* If you need to test it with more current, press the button, and the current will be tripled.
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;Remove the diode
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* Turn off the power
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* Wait until the light turns off
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* Remove the diode

Revision as of 23:22, February 18, 2010

Photo-zener diode tester-with 6V zener diode

This is a circuit to test zener diodes. It hooks up to a 120V AC line and boosts the output voltage to over 300V allowing you to test zener diodes of any voltage. The circuit also has a push button switch to triple the current, if needed. The output is attached to 2 pairs of alligator clips. One pair is to attach to the diode. The second pair is to attach to a multimeter. The voltage across the diode is show on you multimeter.

Warning

It should be noted that this circuit could be dangerous. It is tied directly to an AC line, and has an output of 300V. The output has resistors on each line, which limits the current making it a bit safer, but will still give you quite a shock.


It should be switched off while attaching and removing the zener diode

Components

Circuit

Circuit-schematic-zener diode tester

Photo-zener diode tester-internal circuit

Description

to be added

How to use

Photo-zener diode tester-with 6V zener diode
Testing a zener diode
  • Turn off the power, make sure the light is out
  • Attach the multimeter, positive to positive (red), negative to negative (green)
  • Set multimeter to DC voltage, at the range you expect the diode to be
  • Attach the zener diode, positive to positive (red), negative to negative (green)
  • Turn on the tester
  • Read the output on the multimeter, and that's the zener diodes reverse voltage
  • If you need to test it with more current, press the button, and the current will be tripled.
Remove the diode
  • Turn off the power
  • Wait until the light turns off
  • Remove the diode
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