Electrical Electron Accelerator/Decelerator grid supply

Click For Summary
SUMMARY

The discussion centers on the design of an electron accelerator grid that operates at +500V and -500V with a switching frequency of approximately 10 MHz. The proposed solution involves using a combination of pMOS and nMOS transistors controlled by a driver. However, concerns are raised regarding the adequacy of the MOSFETs' slew rate for the required frequency and the necessary gate-source voltage for proper operation. Alternatives such as thyratron tubes and high-powered radio amplifiers are suggested for improved performance.

PREREQUISITES
  • Understanding of MOSFET transistor operation and characteristics
  • Knowledge of high-frequency switching circuits
  • Familiarity with voltage requirements in electronic components
  • Experience with vacuum systems in electron acceleration
NEXT STEPS
  • Research MOSFET slew rate specifications and their impact on high-frequency applications
  • Explore thyratron tube specifications and their suitability for high-voltage switching
  • Investigate high-powered radio amplifier designs for potential use in electron acceleration
  • Learn about minimizing capacitances in high-frequency electronic circuits
USEFUL FOR

Electrical engineers, physicists, and hobbyists interested in high-voltage electronics, particularly those working on electron acceleration and switching technologies.

Shockblast
Messages
2
Reaction score
0
Hello. I want to build an electron accelerator grid in vacuum. The grid, which has the purpose of accelerating or decelerating electrons produced by a nearby filament has to be electrically charged at +500V or -500V. The switching frequency between the voltages +500V to -500V has to be approximately 10 MHz.

I have developed an idea of doing this by using two MOSFET transistors linked together (one is pMOS and the other one nMOS). The gates of the two MOSFETs are linked to a driver which will command the switching.

The problem I have with this is that I do not think the MOSFETs will have an adequate slew-rate to operate the switching at a 10 MHz frequency. Another thing I do not yet know is what voltage must I have between the gate-source of the transistors in order to function properly?

If anyone has a better solution than the one I posted here (which is not a very good one, as you can see), please inform me! If you think my solution is good, but requires some polishing please tell me what improvements I need.

Thank you all very much, in advance!
 
Engineering news on Phys.org
Perhaps a thyratron tube would work better in this case? I am guessing they are expensive however. You will need some serious power to switch 1kV at 10MHz. Minimizing capacitances will be critical. Now that I think about it, how about a surplus high powered radio amplifier?
 

Similar threads

Why Does the Filament Box in a CRT Electron Gun Have Multiple Pins?
  • · Replies 12 ·
Replies
12
Views
2K
Power grid & generator questions
  • · Replies 46 ·
2
Replies
46
Views
7K
AC generator output voltage to grid question
  • · Replies 4 ·
Replies
4
Views
3K
Linear moving switch, decade counter, chaser
  • · Replies 49 ·
2
Replies
49
Views
5K
Is Increasing the Power Supply Voltage in a Mosfet Amplifier an Easy Upgrade?
  • · Replies 8 ·
Replies
8
Views
4K
Series motors, switched to parallel
  • · Replies 15 ·
Replies
15
Views
2K
Is My Thyristor Gate Driver Circuit Malfunctioning Due to Component Issues?
  • · Replies 12 ·
Replies
12
Views
3K
How does electron speed affect electric power?
  • · Replies 11 ·
Replies
11
Views
2K
China: Boldly Going Where No Grid Has Gone Before
  • · Replies 46 ·
2
Replies
46
Views
9K
Saturation and pinch off in enhancement mosfets
  • · Replies 4 ·
Replies
4
Views
4K