snipped-for-privacy@gmail.com wrote:
>>> What risetime do you need, and is that critical?
>>> Is the duration-time critical? How about the
>>> falltime, the shutoff time? Are you concerned
>>> with quickly getting the voltage all the way
>>> down to 0V, or is 90% of the way down OK?
>>
>>
>> Hi again and thanks for all your replies!
>>
>> Ideally we are looking for rise and fall times below about 400µs.
>>
>> Since it is for an electrospray application, it is not essential that
>> we reach 0V exactly, I guess a couple of 100V on the electrodes after
>> 400µs will not disturb out experiment.
>>
>> Since we need this rather high kV voltages and not just a couple of
>> 100 V, I guess it will probably have to be some sort fo solid state
>> relay - does anyone know where to get those and what would be most
>> suitable?
>>
>> Thanks! /Kristian
> A "solid state relay" is usually made with a FET; 1KV would be the
>max rating.
You can string them together.
You will be better off by making a low voltage pulse (100-500V and
>stepping it up with a transformer.
Hmmm... now where have I heard that before...