Magnet & Coil: Causes of Pistons Stroke

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Discussion Overview

The discussion revolves around the mechanics of a piston system that utilizes a magnet and coil setup, particularly in the context of pumps. Participants explore the theoretical underpinnings of how the coil attracts the piston and the role of additional components like springs or rubber strips in the system's operation.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions whether the stroke of the piston is solely due to the coil's attraction, expressing confusion about the mechanism behind the push and pull motion.
  • Another participant notes that the piston is connected to a spring, which returns it after being attracted by the coil, suggesting that the spring's role is crucial in the system's operation.
  • A participant mentions that a static power supply to the coil should theoretically keep the piston attracted, raising questions about why the magnet is pulled back.
  • Another participant challenges the idea of a constant power supply, proposing that there must be a circuit that sends periodic signals to the coil, causing it to turn on and off.
  • One participant acknowledges the presence of a power electronics circuit and expresses difficulty in understanding the system without a real-world example, seeking further clarification.
  • A later reply suggests that the circuit can be realized in various ways and invites more specific details, such as the model and circuit schematics, to assist further.

Areas of Agreement / Disagreement

The discussion reflects uncertainty and multiple competing views regarding the operation of the piston system. Participants do not reach a consensus on the exact mechanisms at play, particularly concerning the role of the power supply and the nature of the circuit involved.

Contextual Notes

Participants express confusion about the theoretical aspects of the system, indicating potential limitations in their understanding of the underlying principles and the specifics of the circuit design.

Who May Find This Useful

This discussion may be of interest to individuals exploring electromagnetic systems, pump mechanisms, or those studying the interactions between coils and magnets in engineering applications.

rama1001
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I have a situation that a magnet is placed near to a coil. Especially in pumps and the pump is working based on the stroke mechanisam. The coil is powerd up by a DC source of 12volts and the piston(which having magnet on it) is attracted by this coil called as stroke. The distance between the coil and piston is 1Cm. Is that basic stroke is really coming from or due to coil? I am not uinderstood theoritically.

If the coil is really attracts the piston, why then always stoke exist i.e. push and pulling back again. It has to attract by coil always. what is the cause for pushing back?
 
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rama1001 said:
I have a situation that a magnet is placed near to a coil. Especially in pumps and the pump is working based on the stroke mechanisam. The coil is powerd up by a DC source of 12volts and the piston(which having magnet on it) is attracted by this coil called as stroke. The distance between the coil and piston is 1Cm. Is that basic stroke is really coming from or due to coil? I am not uinderstood theoritically.

If the coil is really attracts the piston, why then always stoke exist i.e. push and pulling back again. It has to attract by coil always. what is the cause for pushing back?

Usually that piston is connected to a spring, which returns it back. DC-on pulls, DC-off spring pulls back etc.
 
Yes, you are almost right. I forgot about that and lead me to ask that silly question. But a static power is supplied to the coil which has to attract constantly and stict together always.

As you said about spring that puls back the magnet in my case it is a rubber strip that pulls back the magnet. I wonder now, i ahve a constant supply and then how it is pull back the magnet.
 
rama1001 said:
Yes, you are almost right. I forgot about that and lead me to ask that silly question. But a static power is supplied to the coil which has to attract constantly and stict together always.

As you said about spring that puls back the magnet in my case it is a rubber strip that pulls back the magnet. I wonder now, i ahve a constant supply and then how it is pull back the magnet.

I don't think its a constant supply to the coil. Double check that. There must be a circuit somewhere, that sends periodic signals to coil. So it goes on-off-on-off.
 
OHH!
yes, they too have a power elecronics circuit in it. By the way,how you people understand it without real situation. I am not able to understand this.

Any furthure points will help me.
 
rama1001 said:
OHH!
yes, they too have a power elecronics circuit in it. By the way,how you people understand it without real situation. I am not able to understand this.

Any furthure points will help me.

What kind of help do you need?

With that circuit? That circuit can be realized in so many ways. My statement above was a pure guess, but in principle it SHOULD work like that.

Maybe if you give us the model, and the circuit schematics maybe we can assist you further?
 

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