Soldering Iron Saver

Discussion in 'General Electronics Chat' started by studiot, Jan 11, 2015.

  1. studiot

    Thread Starter AAC Fanatic!

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    Whils looking for an old article I came across this bit (pun intended) of ingenuity again, thanks to PT Evans, and decided to post it since we regularly get questions on this subject.

    ironsava.jpg
     
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  2. pwdixon

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  3. MrAl

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    Hi,

    That's pretty cute. Way back in 1971 wow. Today they have soldering stations with hot air and the hot air has a gravity switch like that on it but i dont think the iron does. That would be nice too.
    I thought about making a foot switch for mine that varies the temperature as the switch is pressed harder or softer with the foot.
     
  4. ian field

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    Your post should carry a cautionary note!

    This may not work quite the way expected if wired in the lead of a direct mains temp' controlled iron.

    Judging by the standard of a minority of the novices that sometimes turn up here - I envisage a half-wave rectifier being put in series with the primary of a transformer base soldering iron. I foresee lots of magic smoke escaping, and possibly a resounding phutt!

    Hopefully no one will be daft enough to do this to a controlled iron - but if you'd seen the things I've seen.........................
     
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  5. studiot

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    Temperature controlled iron?

    This thread was the cue for old timers to go AAAhhhh!



    But you are right, if you have a controlled iron then you shouldn't need a sava.
     
  6. ian field

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    I've got a couple of "big Bertha" irons, but since the installation of ELCBs they both have to be run from isolating transformers - the floating secondary would simplify safety measures where the diode and switch are, but they get used so infrequently its hardly worth the bother.

    Years ago I bought quite a lot of Antex X25 irons because they were vulnerable to mains transients - but cheap enough to think of as consumables.

    Since then I fitted MOV protection and then life expectancy ceased to be a problem - after that I treated myself to the 50W temperature controlled version, there's still several X25s in a box gathering dust somewhere.

    BTW: was that a Radio Constructor article?
     
  7. studiot

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    Yes, indeed it was RC Sept71. Next month after the article on the amplified diode I wanted for the CS design thread.
     
  8. ian field

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    Do you know of any PDF RC archives lurking on the web anywhere?

    Someone gave me a large collection of them when I was at school, but they got destroyed while stored in a garage with a leaky roof.

    There was one particular article/project - a 2 transistor radio that was both reflex and regen, and used a "gimmick" capacitor (2 insulated wires twisted together) for the regen coupling.
     
  9. studiot

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  10. ian field

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    That URL looks familiar - I think they have a fairly sporadic collection of scanned pages.

    The groups of pages are arranged in folders with duplicated file names - collecting the articles is seriously hard work.
     
  11. bertus

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  12. GopherT

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    Was it something like this?
    The 4.7pF capacitor could have been hand-made. We made this and played with it for an afternoon a while back. AM content in my area has gone to the dogs!

    http://www.electroschematics.com/601/2-transistor-radio-receiver/
     
  13. bertus

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  14. ian field

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    Not even vaguely similar - and the transistors pre-dated the likes of BC107, let alone Asian silicon types.
     
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