That is certainly one way to do it, and is one of the ways that John
touched on. It would indeed have no flashing, but I question the
'reasonability' of the linearity. If you were in psychiatric instead
psychology you could modify that with drugs, of course (not to change
the physics, but to change the threshold of what's 'reasonable').
In terms of psychology, the flashing lights could trigger an epileptic
seizure and may irritate your optic nerve causing temporary
disorientation. But that is pretty extreme. As for drugs, that's the
only thing that allows a psych major to expand himself to the realm of
applied electrical engineering. haha. just kidding. but seriously,
flashing lights get way too annoying when your trying to focus on an
experiment. you could say i have a compulsive obsession with
continuity, or maybe im just a stubborn teen.
$50 is basically all i have, so that works out.
Maybe so, but the oven is a test tube wrapped with a fiber glass tape
with nichrome ribbon would through it. That it is wrapped in a
blanket of fiberfrax ceramic wool, which is a very good insulator.
The whole oven is about the size if the toaster.
Can you cook pizza bagels? :)
I saw an omega controller for $195 that has the thermocouple input and
analog output, but I am fairly confident you might find one made in
Japan or China that would cost about half that. The phase control
relays cost most of $100, but if you want to play around with an old
lamp dimmer and a photo cell (to act as the variable resistor normally
connected to the knob) driven by an LED from the analog output, you
might make one that works well enough for 10 or 20 dollars.
How can I find a cheap controller from Japan or China??? Does anybody
know? What is/are the various technical names for a phase control relay
and where can i find a cheap version? I am a little hesitant to use a
photocell and a dimmer because I am an accuracy freak. But it was a
neat idea and ill probably end up playing with it.