Test Circuit Request: Stop Current Before Wire End?

[Grumpy]

static electrical potential

it all starts here

[Spherenot]

Thanks for all the the links.

I might try making this circuit I found at: http://www.discovercircuits.com/DJ-Circuits/oneshots.htm

D-FLIP/FLOP ONE SHOT CIRCUITS
Yes you can use cheap D flip/flop logic circuits as nice one-shot pulse generators. This schematic shows how the popular CD4013 and the CD74HC74 can be used to generate pulses ranging from nanoseconds to seconds.

The question is, how few nanoseconds?

[giantkiller]

Thanks for all the the links.

I might try making this circuit I found at: http://www.discovercircuits.com/DJ-Circuits/oneshots.htm

D-FLIP/FLOP ONE SHOT CIRCUITS
Yes you can use cheap D flip/flop logic circuits as nice one-shot pulse generators. This schematic shows how the popular CD4013 and the CD74HC74 can be used to generate pulses ranging from nanoseconds to seconds.

The question is, how few nanoseconds?

Make it adjustable and stick it in.

[giantkiller]

repost boo boo.

[Spherenot]

Thanks for all the the links.

I might try making this circuit I found at: http://www.discovercircuits.com/DJ-Circuits/oneshots.htm

D-FLIP/FLOP ONE SHOT CIRCUITS
Yes you can use cheap D flip/flop logic circuits as nice one-shot pulse generators. This schematic shows how the popular CD4013 and the CD74HC74 can be used to generate pulses ranging from nanoseconds to seconds.

The question is, how few nanoseconds?

Someone please help me with this circuit.

The designer of this circuit claims that it will do nanosecond scale.  I built it.  It works.  But I am having trouble shrinking the pulse-on time down to my 20 nanosecond goal.  (I may even settle for 200 nanoseconds.)

I have a good assortment of resistors.  I have a more limited supply of caps, and maybe I am using the wrong kind, (reversible vs. polarized.)  I can always buy more parts.

What specific parts shall I seek to make my goal frequency and where shall I place them?   ...don't say it.