Will this electronic circuit work? (back-to-back polar capacitors)

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Discussion Overview

The discussion centers around the functionality of a specific electronic circuit involving back-to-back polar capacitors. Participants are asked to evaluate a schematic and determine if the circuit will operate as intended, with considerations for safety and appropriate component ratings.

Discussion Character

  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant requests feedback on their schematic to determine if the circuit will work.
  • Another participant suggests using an AC rated capacitor with suitable voltage and current ratings.
  • A different participant argues that the circuit will not work due to the absence of a load, implying that the capacitors may fail under certain conditions.
  • Another comment humorously suggests that the circuit might function as a small explosive device if misused.
  • A later reply mentions that back-to-back polar capacitors can be used in AC situations, noting that the overall capacitance will be half of each capacitor's value, while also highlighting safety considerations.

Areas of Agreement / Disagreement

Participants express differing opinions on the circuit's viability, with some asserting it will not work due to a lack of load, while others provide conditional support for its use in AC applications, indicating that the discussion remains unresolved.

Contextual Notes

There are unresolved safety concerns and additional considerations regarding the use of back-to-back polar capacitors in AC circuits that have not been fully explored in the discussion.

John1397
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TL;DR
All I need is for someone to look at my schematic and tell me if this circuit will work. Thanks.
All I need is for someone to look at my schematic and tell me if this circuit will work. Thanks.
 

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Get an AC rated capacitor with appropriate voltage and current ratings.
 
No, it will not work because there is no load.
If all you want to do is cook the capacitors you may be lucky.
 
John1397 said:
Summary:: All I need is for someone to look at my schematic and tell me if this circuit will work.
Might work great as a one-time small explosive device.
 
Thread closed temporarily for Moderation...
 
John1397 said:
Summary:: All I need is for someone to look at my schematic and tell me if this circuit will work. Thanks.

All I need is for someone to look at my schematic and tell me if this circuit will work. Thanks.
@John1397 -- Please don't try to re-start your locked thread: https://www.physicsforums.com/threads/tv-capacitor-instead-of-motor-capacitor.1004111/
(that is against the PF Rules).

On the basic question of whether back-to-back polar caps can be used in AC situations, the simple answer is yes as long as you realize that the overall capacitance is half of the capacitance of each capacitor. There are more considerations, and since you are dealing with a dangerous circuit there are also safety considerations. This thread will remail closed on that basis.

More info on back-to-back polar capacitor applications here:

https://cie-wc.edu/1418-1Experiment8UsingCapacitorsina-cckts05-15-2012.pdf
 
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