I use one of these timers to save my iron when I forget to turn it off it does it for me.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.
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Your post should carry a cautionary note!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.
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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.
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.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.
Do you know of any PDF RC archives lurking on the web anywhere?Yes, indeed it was RC Sept71. Next month after the article on the amplified diode I wanted for the CS design thread.
That URL looks familiar - I think they have a fairly sporadic collection of scanned pages.
Was it something like this?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.
Not even vaguely similar - and the transistors pre-dated the likes of BC107, let alone Asian silicon types.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/