So I have an old RCA Thyatron tube (model 3C23) I'm using in an art piece as a glowing element. Just feeding maybe 50-60 watts through the anode to make it glow.
My question is, do I have to be worried about UV radiation? I heard somewhere the glass was quartz or borosilicate and blocked it...
I did it!
Funny operation though. Sometimes it will stay on without the heating filament and sometimes not, even if the current is the same. I have it connected through 168VDC and a series resistor (~2k).
I found a thyratron tube at a yard sale recently and I want to build a circuit to heat the filament and illuminate the mercury vapor for purposes of building a novelty lamp.
The filament is just 2.5VDC at 7 amps and I have a transformer for that.
To light the vapor I will apply DC rectified...
Am I approaching this the right way? I don't see what else theta can be written as.
would writing it in terms of cosine make sense? then V_{o}=\frac{V_{s}^{2}t}{\sqrt{d^{2}+V_{s}^{2}t^{2}}}
Homework Statement
Trying to find the formula to generate a sin wave that would compensate for the Doppler effect if played from a car moving 50 mph past a stationary observer 1 meter from the car's path.Homework Equations
ƒ_{observed} = \frac{v}{v+v_{s}}ƒ_{source}The Attempt at a Solution...
This article mentions moon dust as "subjected to a millenia of UV radiation" as if it's a bad thing. UV would simply irradiate the dust, not make it more hazardous correct?
Perhaps they meant "a millenia of cosmic radiation" which would be much more problematic, no?
If this line of...
Between you and me, the interface is ugly as heck IMHO. I don't see why he doesn't just do away with it completely. But, I think he wants the originality of the car to be preserved, so I'm looking at it as a purely technical challenge.
My circuit is not technically from scratch--as Carl Sagan...
The energy has to come from somewhere. If you try to power a motor with the very electricity it's trying to generate, you will have designed a paperweight that looks like a flashlight.
Hypothetically, in a perfect world, the stepper motor would be 100% efficient and it could in fact run on...
Uhh, now I know this isn't true. I'm looking at a commercial clock radio sitting right in front of me that uses a variable capacitor to tune FM.
So I might need new cores. That doesn't seem like a big problem compared to completely re-doing the internals and wiring up a modern radio to fit...
Could you expand a little on this? The cores appear to be ferrite so I don't know why they couldn't be used for higher frequency applications.
My main concern is the lack of accuracy with these coils...a slight touch results in a change of 1 uH and with a 5pF cap that's halfway to the next FM...