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Another Gate to Trigger idea
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gasboss775



Joined: Jan 02, 2016
Posts: 217
Location: Scotland

PostPosted: Tue Feb 16, 2016 1:14 am    Post subject:  Another Gate to Trigger idea Reply with quote  Mark this post and the followings unread

Another variation on the gate to trigger circuit is to use a buffer (4050B) wired as a Schmitt trigger. There is no need for the clamp diode as the chip has onebuit in at all of its inputs.

The values of C1 & R3 may need tweeked depending on your application ( they determine the length of the trigger pulse )



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izash



Joined: Apr 22, 2010
Posts: 8
Location: Israel

PostPosted: Sun Jul 10, 2016 6:00 am    Post subject: Re: Another Gate to Trigger idea Reply with quote  Mark this post and the followings unread

Hello Gasboss,

Your circuit works great in my Eurorack setup (off of a breadboard).

I'm planning to use all 6 circuits of the 4050b and build a module with 6 gates to triggers as I need them to trigger some modules that require short triggers.

Is there anything I should consider before building the circuit?

I'm an electronics newbie, so I may miss something crucial here.

Thank you for sharing your knowledge!

Izhar Ashdot, Tel Aviv.


gasboss775 wrote:
Another variation on the gate to trigger circuit is to use a buffer (4050B) wired as a Schmitt trigger. There is no need for the clamp diode as the chip has onebuit in at all of its inputs.

The values of C1 & R3 may need tweeked depending on your application ( they determine the length of the trigger pulse )
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Grumble



Joined: Nov 23, 2015
Posts: 1294
Location: Netherlands
Audio files: 30

PostPosted: Mon Jul 11, 2016 12:59 am    Post subject: Reply with quote  Mark this post and the followings unread

since this circuit triggers at the leading edge, maybe as an extra first invert the input signal using one of the schmit-triggers, than you have a trigger pulse at the trailing edge of the applied (Gate) signal.
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