Pyrography

Discussion in 'General Electronics Chat' started by Enc2012, Nov 23, 2014.

  1. Enc2012

    Thread Starter New Member

    Oct 11, 2012
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    Hello.

    I need to make some simple pyrograph for college of mine but am stuck in a process.
    There is a way to make this ultra simple with PC power supply but for this i need TL494 which is not in any of my power supply's.

    Anyhow, i have few transformers ( 12V ,24 and one from microwave oven ) so i was planning to do this with such setup, but to do so i need some basic scheamatics or explanation how to make this.

    Can some one share some schematics or ideas ?

    Best regards !
     
  2. bertus

    Administrator

    Apr 5, 2008
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  3. Enc2012

    Thread Starter New Member

    Oct 11, 2012
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    :). I know what pyrograph is and how it works. I want to make my own, that's why i need help.
     
  4. tracecom

    AAC Fanatic!

    Apr 16, 2010
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    Get something hot and apply it to something that changes color with heat.

    Or do you mean that you want to make a tool that you can use to make pyrographs?
     
  5. KJ6EAD

    Senior Member

    Apr 30, 2011
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    So far, it's like you're asking how to make cheese from fruit. There's no obvious relationship between the stated goal and the equipment listed such that one is useful in making the other.

    Perhaps "pyrograph" is an incorrect term.
     
  6. GopherT

    AAC Fanatic!

    Nov 23, 2012
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  7. BR-549

    Well-Known Member

    Sep 22, 2013
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    Hello Enc2012,

    I'm having a hard time understanding what you want to do.
    May I ask what you are studying? And where you are located?
    Knowing a little of your background gives us context and a hint of your electronic knowledge.
    Knowing where you are tells us the line voltages and parts specs., avail., resources, etc.

    What I gather is that you have a college project that requires you to use the TL494?

    And you want to control a surplus computer power supply?

    This power supply will heat a pyrography heating tool?

    Is this close to what you want?
     
  8. Enc2012

    Thread Starter New Member

    Oct 11, 2012
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    Guys, thank you for your fast reply ! I will try to explain in more detail.

    The first idea was to create something like this:


    but i dont have any PC power supply with TL494, so instead of this i was thinking to start everything from the beginning.
    To do so i was planning to use some transformer and some basic setup. The final project should be wood burning tool with capability to use some thinner or thicker wire at the end, because the buyer is semiprofessional "wood burning painter" and he needs this for his design.

    If i can archive this with some pc power supply ok, i will try to find one, but if not then i need to make this on my own.
    Btw. high school - radio electronics, faculty - B.Sc IT, Central Europe, line voltage= 220 / 50 hz :)

    Regards !
     
  9. tracecom

    AAC Fanatic!

    Apr 16, 2010
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    Okay, I understand that you want to create a DC power source with an output that is continuously variable from 1 to 6 volts and will provide up to 23 amps.; is that correct? Do you already have the hand held device that includes the heating element, or do you need to build that as well? Do you have any specifications for the heating element?
     
  10. Enc2012

    Thread Starter New Member

    Oct 11, 2012
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    Okay, I understand that you want to create a DC power source with an output that is continuously variable from 1 to 6 volts and will provide up to 23 amps.; is that correct? *** Yes , this is correct.

    Do you already have the hand held device that includes the heating element, or do you need to build that as well?
    *** I was planning on using one modified soldering iron "pencil".

    Do you have any specifications for the heating element?
    *** No.

    The final design of the burning tool is totally up to us. The main thing is that this works as defined by the costumer...
     
  11. GopherT

    AAC Fanatic!

    Nov 23, 2012
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    Do you have access to a soldering pencil that works on 1 to 6 volts? Does such a thing exist?
     
  12. Enc2012

    Thread Starter New Member

    Oct 11, 2012
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  13. GopherT

    AAC Fanatic!

    Nov 23, 2012
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    Nice. Then buy some resistance wire by the foot on eBay to go with it. Various thicknesses. Ask the seller for recommendation or use the calculator on their posts to pick a reasonable thickness.

    You may not need more than 5 or 10 watts for something like that to char wood. Your computer power supply may be overkill in terms of amps. However, It may be just right in terms of cost.
     
  14. Enc2012

    Thread Starter New Member

    Oct 11, 2012
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    OK, but tell me, do you have some schematics how to do this with transformer / pot and some basic setup ?
     
  15. djsfantasi

    AAC Fanatic!

    Apr 11, 2010
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    The current required to heat up your burning tool means that a basic setup with a transformer and pot will soon release the magic smoke.
    [​IMG]
    You could try a dimmer inline with the power cord of the soldering pencil. A 1000W dimmer and a duplex outlet mounted in an electrical box, with a grounded power cord might work. Comments, guys?

    Another approach would be to use a Variac
     
    Last edited: Nov 25, 2014
    bance likes this.
  16. cbecket13

    Member

    Nov 15, 2014
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    Use near-field communication.
     
  17. kubeek

    AAC Fanatic!

    Sep 20, 2005
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    Perhapaps you missed the correct thread.
     
  18. GopherT

    AAC Fanatic!

    Nov 23, 2012
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    Near field communication wood burning? :p
     
  19. cbecket13

    Member

    Nov 15, 2014
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    I did actually. Sorry.
     
  20. Enc2012

    Thread Starter New Member

    Oct 11, 2012
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    Da MagicSmoke :)
    Can someone confirm this setup with dimmer / variac ?

    Thnx in advance !