Electronics > Projects, Designs, and Technical Stuff
"Tail" pulse generator // particle detector simulator
ChristofferB:
Just to round off this topic (I know it's a bit old now, sorry!)
I ended up buying a proffessional pulser (for like 20$ - and it's ORNL surplus!!) which is based on a mercury wetted relay. I made a brief video on its teardown and operation, I though that might be of interest to others than me.
OM222O:
You could have also used a small capacitor and a fet.
The fet would "short" the capacitor and charge it without resistance which is pretty fast, then when the fet disconnects, the cap would discharge via a small resistor to have the rounded off "tail". By choosing low capacitance fets and reasonably small capacitor and resistor, it should have been possible. Then all you needed was a square wave pulse to control the fet 😉
eliocor:
Here is the schematic of one of the simplest wetted relay pulser: the Canberra 807
ChristofferB:
Thank you so much! This might actually be functionally identical to my Tennelec unit, as the function is identical, and Canberra bought Tennelec in the late 80's!
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