From Marvel Comics The Punisher Armory No 1

Taser:

“The Taser is for the rare occasion that I want to non-fatally subdue someone. It works by temporally zapping a body’s nervous system.

Normally, this little thing cranks 35,000 volts, with some finagling, I got 100,000 …

This phone book is a substitute person. I use an oscilloscope to chick for any frequency shift in the delivered jolt. It seems to me the needle-sharp darts might do some damage in any event.”

Published by Marvel Comics in The Punisher Armory No. 1, July, 1990