[Elecraft] Wanted: circuit diagram

[Don Brown]

Hi

I usually just scratch on the metal case of Q22 (the collector) with a 
screwdriver while holding it touching the metal shaft. This causes a random 
popping that the noise blanker handles nicely. You can switch the blanker on 
an off and here a big difference. If you want to build a pulse generator 
there are several circuits based on a LM555 that are easy to build. I think 
Radio Shack still sells 555's. Do a Googal search for National Semiconductor 
and down load the 555 data sheet. There should be several circuits listed

Don Brown






----- Original Message ----- 
From: "Karsten Eppert(DK4AS)" <karsten.eppert at web.de>
To: <elecraft at mailman.qth.net>
Sent: Tuesday, February 07, 2006 11:51 AM
Subject: [Elecraft] Wanted: circuit diagram


> Hi folks,
>
> can anybody help me with a circuit diagram for a simple pulse-generator
> which I can use as test-generator in order to test the function of the
> KNB2? I figure 2 transistors will do, but can´t recall the rest.
> 73
> Karsten
> DK4AS
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