Will you be accepting Dogecoin for registration?
Shanjaq
3 posts · 27 more in threads this archive does not carry · writing between Apr 2012 and Feb 2014
An identity on Energetic Forum as it was harvested, not an account on this site. Nobody here has claimed it, and nothing connects it to a person by name.
What about a triggered spark gap, or a gas-discharge tube?
Xenon Flasher
There are also big SCR's, but they have to go below a threshold current before shutting off, which would be a problem if charging were continuous.
IGBT "brick" modules are OK, a bit slow though.
That "high-side gate driver" page has been enormously useful, especially the final iteration shown.. try it out in the falstad simulator
Try it out with the biggest switches you've got (voltages must be within spec, power dissipation from amperage is probably cumulative, monitor for heating with an infrared thermometer and see how it goes!)
Xenon Flasher
There are also big SCR's, but they have to go below a threshold current before shutting off, which would be a problem if charging were continuous.
IGBT "brick" modules are OK, a bit slow though.
That "high-side gate driver" page has been enormously useful, especially the final iteration shown.. try it out in the falstad simulator
Try it out with the biggest switches you've got (voltages must be within spec, power dissipation from amperage is probably cumulative, monitor for heating with an infrared thermometer and see how it goes!)
Opto-couplers are orders of magnitude slower than BJT/FET/IGBT
For example:
E= V^2*C/2
30uF @ 550v is 4.54 Joules, you could probably scale that up a bit
However, if your inductor is lacking impedance, your switch might be seeing 550 Amps at t=0 and ~10 Amps at t=120uS... Yeah.. most silicon switches affordable to hobbyists aren't well suited to capacitor discharge.. mmmmmm... Thyratrons .... :drool:
-Edit-
The following circuit could be modified to drive a low-side insulated-gate device, safely and very fast!
High-Side Gate Drivers
For example:
Code:
Parameter H11D1 IRF610 td(on) 5uS 8.2nS tr 2.5uS 17nS td(off) 6uS 14nS tf 5.5uS 8.9nS
E= V^2*C/2
30uF @ 550v is 4.54 Joules, you could probably scale that up a bit
However, if your inductor is lacking impedance, your switch might be seeing 550 Amps at t=0 and ~10 Amps at t=120uS... Yeah.. most silicon switches affordable to hobbyists aren't well suited to capacitor discharge.. mmmmmm... Thyratrons .... :drool:
-Edit-
The following circuit could be modified to drive a low-side insulated-gate device, safely and very fast!
High-Side Gate Drivers