Troubleshooting PN and Zener Diode Circuit Fluctuations: Tips and Solutions

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Discussion Overview

The discussion revolves around troubleshooting issues with a circuit involving PN and Zener diodes, specifically focusing on fluctuations in readings when measuring voltage and current. Participants explore potential causes and solutions related to circuit design and measurement techniques.

Discussion Character

  • Technical explanation, Debate/contested, Experimental/applied

Main Points Raised

  • One participant reports fluctuations in readings when measuring voltage and current in a PN and Zener diode circuit, seeking reasons and solutions.
  • Another participant requests additional information to better understand the issue.
  • A participant describes specific measurements taken, indicating a range of voltage and current readings, and questions how to obtain readings beyond a certain point.
  • One suggestion involves using a current divider to extend the range of the ammeter, noting that the diode has a current limit and suggesting the importance of a voltage dropping resistor.
  • A request for a simple circuit diagram to implement the suggested solution is made.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the cause of the fluctuations or the best solution, with multiple suggestions and requests for clarification present.

Contextual Notes

The discussion lacks detailed specifications of the circuit components and configurations, which may influence the proposed solutions. There are also unresolved aspects regarding the exact nature of the fluctuations and the measurements being taken.

Who May Find This Useful

Individuals interested in electronics troubleshooting, particularly those working with diode circuits and measurement techniques.

ajaykrishna90
When pn and zener diode is connected according to the circuit diagram(manual not diode box,ie, by connecting wires) it shows great fluctuations and readings can't be able to take. What may be the reason for this and how can i rectify?
 
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Welcome AJ - but you have to provide more info..
 
I mean, when measuring 0v -0mA then .1v-0mA then 0.2v-0mA then 0.3v-100mA then 0.4v- 500mA ,thats the final range (500mA) for milli ammmeter. So how can i take readings after 0.3v?
 
If you read up on a current divider - you can make a small circuit to extend the range of your ammeter. The data above looks valid for a diode. Note the diode also has a current limit - , so a voltage dropping resistor may also be important to look into...
 
Thanks windact. Any simple circuit diagram is available?
 

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