Multiplying Voltage for Coil Gun - DIY Project

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Discussion Overview

The discussion revolves around the design and construction of a coil gun, specifically focusing on methods to multiply voltage from a low voltage source (two 9V batteries) to charge high-voltage capacitors (400V, 6300µF). Participants explore various approaches to achieve this voltage increase while considering the practicality and safety of the design.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant seeks advice on the best method to multiply voltage for a coil gun project, expressing limited experience with circuits.
  • Another participant suggests using a 120V wall adapter instead of batteries, arguing that it could simplify the circuitry and reduce charging time for the capacitors, despite sacrificing mobility.
  • A third participant proposes the Cockcroft-Walton multiplier rectifier as a potential solution and emphasizes the importance of using a transformer for safety during construction and testing.
  • A final post indicates a refusal to assist with the coil gun project, leading to the closure of the thread.

Areas of Agreement / Disagreement

The discussion contains multiple competing views regarding the best approach to achieve the desired voltage increase. There is no consensus on a specific method, and the thread concludes with a refusal to provide further assistance.

Contextual Notes

Participants express varying levels of experience and knowledge, which may affect the feasibility of the proposed methods. The discussion does not resolve the technical challenges involved in safely constructing a coil gun.

poekrel
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I'm just starting a project that I've been thinking about for quite some time. i would like to make a coil gun. my question is this: what would be the best method of multiplying the voltage from, say, two 9V batteries up to an amount fit for charging four 400V 6300uf capacitors. i don't want anything too big like a dc/dc converter but something that i can assimilate into the coil gun design. And considering my laughable experience with circuits (about two courses of electrical classes) do any of you have resources for me to learn how to design and make the multiplier that i need?
 
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so I've talked to a few professors at my college and several suggested that instead of trying to step up the voltage from a battery pack that i might consider using a 120v wall adapter as my source voltage.it would limit its mobility but if it makes the circuitry significantly easier and decreases the charging time on the capacitor banks then I am willing to trade for it. any suggestions for me from any one?
 
Perhaps they have in mind the Cockcroft-Walton multiplier rectifier? http://www.allaboutcircuits.com/vol_3/chpt_3/8.html

It would be highly advisable to use a transformer, in any case, to provide a measure of safety while you construct and test it, as well as for the operator.
 
Sorry, we won't help you build a coil gun here. Thread closed.
 

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