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1 hour later…
2:18 PM
@Marla Wait wait wait--what do you mean you keep up with the stack?
(And it was interesting reading a snapshot of someone's life here.) Thanks.
 
3:17 PM
@AdamUraynar On my mobile phone, I view the stack exchange answers, but not use the chat
er questions, whatever :)
 
 
1 hour later…
4:29 PM
@Marla Dumb question, but would induction heating be useful for heating up a tube of amorphous silicon carbide?
Or would I be better off with regular heating elements?
 
4:48 PM
@W5VO . . setting aside cost, be cause induction would be more expensive. . . . 1. The rise to desired temperature could be much more quickly. 2. Non contact if desired.
Although high temperature heating elements are not inexpensive. What temperature?
 
5:22 PM
If you have a brofessor, do you call them bro instead of sir? electronics.stackexchange.com/questions/449745/…
 
 
1 hour later…
6:26 PM
@Marla 1300-1500C
Not sure if rate of change is a benefit in this case
Just wondering, because at those temperatures, options for resistive heating elements seem to fall off
 
6:56 PM
@W5VO . . I suspected you were going for those temperatures. Induction heater is good for your application.
 
Keep up, meaning view every question??
 
Yes. Meaning I could get on SE but wasn't viewing chat.
 
Just seems like a lot to keep track of
 
@VoltageSpike . .amusing typo .
 
How would I find out what frequency to use? (Or is there a standard frequency for this stuff?)
 
7:18 PM
@W5VO heating SiC? that sound like a fun project
 
7:39 PM
@VoltageSpike Yeah, a fun cooking experiment
 
8:24 PM
Do you know how massive a 1cm black hole needs to be? 1.1 earth masses... omnicalculator.com/physics/schwarzschild-radius
Insane...
 
9:17 PM
yo voltage spike, we use instrumentation amplifier instead of a differential amplifier just because input resistance of Differential amplifier is too low.
and what does it mean input resistance of differential amplifier is too low,
 
9:55 PM
@W5VO . . find out the resistivity of your particular material. Silicon carbine has many variations and they have a wide range of resistivity. And also resistivity ,of course, changes with temperature.
For a situation where you are maintaining final temperature the depth of current penetration (skin depth) is not very important except for how it affects efficiency.
It is not critical, but you probably don't want skin depth deeper than the wall thickness.
 
1
Q: How is working on DC high voltages as in a tube radio different from 120VAC?

Mike WatersSuppose that I am familiar with the safety procedures for working on 20 A 120 VAC 60 Hz household lines. What should I be prepared for before working on high voltage DC circuits (say, 800 volts) as is commonly found on the anodes in tube transmitters?

 

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