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less 20ns switching in a coil without transistors

Started by giuseppe, February 01, 2020, 03:40:09 PM

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giuseppe

February 01, 2020, 03:40:09 PM
What type of  oscilante system  is possible to be used to create pulse signal /switching ( less 20ns) in a coil ?  old school
Without transistors or another electronic systems / NO silicon-based .

Toolofcortex

#1
February 01, 2020, 03:41:37 PM
Tube and mechanical rotationnal spark gap.

??

Raycathode

#2
February 06, 2020, 04:48:35 PM
Why make it hard, a commutator and stator and carbon brushes just collect the narrow pulses,

Toolofcortex

#3
February 06, 2020, 05:00:34 PM
Its inefficient as you need a mechanical source.

How much energy you need to charhe the capacitor of a MOSFET and let flow?

what loss penalty? Even with thermal loss of MOSFET.

Raycathode

#4
February 06, 2020, 09:40:42 PM
Quote from: Toolofcortex on February 06, 2020, 05:00:34 PM
Its inefficient as you need a mechanical source.

How much energy you need to charhe the capacitor of a MOSFET and let flow?

what loss penalty? Even with thermal loss of MOSFET.
Make up your mind you want mechanical or semiconductor ? if you use a PNP and an NPN you can trigger it on the knee and instantly discharge the cap, are you racing electrons rise time here ?
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