Is Reverse Charging in an Oscillatory Circuit with a Diode Useful?

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Discussion Overview

The discussion revolves around the concept of reverse charging in an oscillatory LC circuit that includes a diode. Participants explore the implications of using a diode as a switch within the circuit and whether the reverse charging process could be beneficial in any application.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant describes how an LC circuit oscillates at its natural frequency, converting energy between electrical and magnetic forms, and notes that the inclusion of a diode stops oscillation after one cycle due to its unidirectional conduction.
  • Another participant requests a circuit diagram to better understand the question, indicating that the lack of visual representation makes it difficult to provide a comprehensive response.
  • A different participant suggests that the reverse charging process could be useful for generating both positive and negative voltage supplies when using two circuits with one diode reversed.
  • One participant asserts that introducing a diode into an LC resonator will prevent it from oscillating beyond one half cycle, as the diode causes rapid energy dissipation.
  • Clarification is provided that the circuit in question is indeed an LC circuit, despite earlier confusion regarding its classification as an RC circuit.

Areas of Agreement / Disagreement

Participants express differing views on the utility of reverse charging in circuits and the effects of diodes on oscillation. Some propose potential applications, while others emphasize limitations and challenges. The discussion remains unresolved regarding the overall usefulness of reverse charging.

Contextual Notes

Participants note the absence of a circuit diagram, which may limit the clarity of the discussion. There is also a mention of confusion between LC and RC circuit classifications, indicating potential misunderstandings in the technical details.

Rabin upadhaya
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The LC circuit should oscillate with its natural frequency in absence of any external agent and the energy is alternatively converted from electrical to magnetic.Suppose that i include a diode in this circuit that acts as a switch.Now the capacitor is completely discharged while diode in on state.
The oscillation stops after one cycle because the diode is not a two way conduction switch.During the previous process the capacitor gets reverse charged.
Can this reverse charging process be useful in any circuit?
 
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Rabin upadhaya said:
The LC circuit should oscillate with its natural frequency in absence of any external agent and the energy is alternatively converted from electrical to magnetic.Suppose that i include a diode in this circuit that acts as a switch.Now the capacitor is completely discharged while diode in on state.
The oscillation stops after one cycle because the diode is not a two way conduction switch.During the previous process the capacitor gets reverse charged.
Can this reverse charging process be useful in any circuit?

Welcome to the PF.

Could you please post a circuit diagram? It is hard to understand your question without more information. Thank you.
 
Sorry i do not have a circuit diagram for this but i consider using any of the oscillator circuit with a diode.
 
Rabin upadhaya said:
Sorry i do not have a circuit diagram for this but i consider using any of the oscillator circuit with a diode.

draw a diagram in MSPaint or some other graphics prog and post it here
That way we can see clearly what you are trying to work out
As Berkeman said, you are really not supplying enough info for anyone to give you a decent answer

cheers
Dave
 
I have tried to draw the circuit please check the attachment.
 

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That is useful in that it's the basis for many circuits. If you have two of these, but one with the diode reversed, you will be able to generate both positive and negative voltage supplies.

As the load typically draws off charge, the capacitor discharges a bit, and can then be topped up on later cycles.
 
If you put a diode in the circuit of an LC resonator, it will not 'oscillate' for more than one half cycle. The diode will cause the energy to dissipate very rapidly bu introducing a very low R during its 'on' interval.
PS That diagram you drew is an RC and not an LC circuit. Which did you mean?
 
This is an LC circuit.
 
Thank you for your generous help.
 

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