Diode Configs: Same Work | Rectify Me Please

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    Diode Diodes
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Discussion Overview

The discussion revolves around the configurations of diodes, specifically comparing back-to-back connected diodes and anti-parallel diodes. Participants explore whether these configurations function similarly, with a focus on their applications in rectification and voltage regulation.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant questions whether back-to-back connected diodes and anti-parallel diodes work similarly, expressing uncertainty and seeking clarification.
  • Another participant asserts that back-to-back connected diodes will block current flow regardless of the direction, suggesting that this can be tested through drawing and experimentation.
  • Multiple participants agree that current will not flow in a back-to-back diode configuration, but one notes that Zener diodes can be connected this way for specific applications.
  • A participant mentions the use of back-to-back diodes in double-sided clipping circuits, indicating a practical application that raises the initial question.
  • Another participant cautions against the absolute statement that current never flows in back-to-back configurations, explaining that Zener diodes can function as voltage regulators in such setups.
  • It is noted that rectifier diodes can be sold back to back for high-frequency applications, and that context is crucial for understanding these configurations.

Areas of Agreement / Disagreement

Participants express differing views on the functionality of back-to-back and anti-parallel diode configurations. While there is some agreement on the blocking nature of back-to-back diodes, the discussion reveals multiple competing perspectives on their applications and behaviors.

Contextual Notes

Participants highlight the importance of context when discussing diode configurations, indicating that assumptions about their behavior may vary based on specific applications or circuit designs.

debajyoti datta
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2 diodes connected back to back ...and 2 anti-parallel diodes...are these 2 configurations same...i mean work similarly?...i think NO...rectify me please if wrong...it might be a silly question but i would really appreciate the answer
 
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debajyoti datta said:
2 diodes connected back to back
So that whichever way current tries to flow, there will always be one diode which blocks the current? Draw it and try it.
 
in back to back connected diodes...current will never flow...right?
 
debajyoti datta said:
in back to back connected diodes...current will never flow...right?
Yes, that is so.

Yet there may be times when you do see a pair of diodes ("Zener diodes") connected exactly like that: back-to-back. What is this about?
 
Sir,i have seen that in double sided clipping circuits..so that output is between (Vz.+Vk) and - (Vz.+Vk)..actually my question arose from there
 
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Careful..never?...zener back to back make a voltage regulator
Rectifier diodes are sold back to back as a high frequency smps rectifer using the center point as the AC location, and signal diodes are connected back to back as a decision point (probably not the right term) but I see them all the time.
The latter two are 3 terminal circuits, so without context, the question could be misleading.
 

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