[time-nuts] Fast Rise/Fall Time Pulser

Bob Albert bob91343 at yahoo.com
Tue Oct 10 20:08:38 UTC 2017

I built one, and later saw a simpler one.  Very fast, very simple.  I think my total cost was a few cents.
Google TDR DIY pulser.  One from an old magazine (Jim Williams) looks pretty good, using collector breakdown of a 2N2369.  The one I made used one IC and a few resistors.


    On Tuesday, October 10, 2017 1:02 PM, Brooke Clarke <brooke at pacific.net> wrote:

 Hi Larry:

How does it work.
When I was working with microwave semis it was either a tunnel diode or a Step Recovery Diode.

Have Fun,

Brooke Clarke

-------- Original Message --------
> There has been discussion recently about generating fast rise/fall time pulses by various means. Here is a link to a 
> Leo Bodnar device that will provide <40 ps rise/fall time, 50% duty cycle, 10 MHz pulses:
> http://www.leobodnar.com/shop/index.php?main_page=product_info&cPath=124&products_id=295
> This is built on a small PWB with integral BNC connector, powered by 5 vdc through a USB B connector; a trigger output 
> is provided. Price is US$68.
> I've ordered one of these for testing.
> Is anyone here using one of these?

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