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From: "Trevor Wilson"
Subject: Re: easy fast rise time pulse generator?
Date: Sun, 13 Oct 2002 06:56:20 +1000
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"Larry Gagnon" wrote in message
> I require a fast rise time pulse generator to calibrate the vertical
> amplifier pulse response of my HP1722B oscilloscope. Obviously the
> pulse marks do not need to be of high frequency train because the
> scope is calibrated for this at a time/div of only 10 microseconds.
> Could anyone suggest a simple circuit that would give me a fast rise
> pulse? Any help greatly appreciated.
**A 555 driving a Maxim line driver IC (I can't recall the part number) will
give you 50nS rise time. Maybe less, with careful layout (I managed 30nS).
I'll post the Maxim IC number later today. It comes in an 8 pin mini-DIP.
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