Looking for high voltage diodes

[nebisman]

help on DIODE

Do you know any DIODE for high power application which has the following specifications:

Forward current of 100 mA
Reverse voltage of 100KV

well, this specifications could be at least:

Forward current 20mA
Reverse voltaje of 20kV


thanks nebisman


Thx for your repply EEHardware if you don't tell me it I had never known it. The sense for do this question to the elektrodians is to receive advices of more economical or reliable way to solve a problem from experimented friends about a new field for me.




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[flatulent]

Re: help on DIODE

These are built up from many diodes in series. Each diode has a high value resistor in parallel with it so that the reverse voltage divides equally between the diodes. Sometimes there is a small capacitor also in parallel with each diode so that transients also divide equally between the diodes.

Then these diodes R and C are put in a special housing with special surfaces to prevent flash over around the outside surface.

I have also seen PC boards made of special material with ceramic posts to support the junctions between the diodes.

In this case, special hermetic sealing is needed to prevent pollutants in the air from depositing on the posts and PC board to form conducting films.

 

[tryagain]

Re: help on DIODE

Can you use several diode In series?

 

[nebisman]

Re: help on DIODE

Well I can use several diodes but still I need and advice about this DIODES. What kind of diodes?

 

[tanuki]

Re: help on DIODE

What kind of help? Recovery time? Size? Temperture? Cost?

**broken link removed**

There are thousands of references using Google.

search for "high voltage diodes"

Examples:

**broken link removed**

http://www.voltagemultipliers.com/

 

[nec3]

Re: help on DIODE

in those old times there was TV20 which used to rectify the EHT voltages of picture tubes in tv's.but not sure still in market.

 

[EEHardware]

help on DIODE

go to google, and search which do you want, you will
get .