Timer Questions

Lew

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I'm a real beginner but making progress.  I bought a timer kit from Kevin May and promptly ruined it trying to solder for the first time.  However, I got good practice and learned some of the skills.  Then I bought a Ramsey timer kit (UT5) and have successfully got it soldered.  I have a Lamson PIR and a Canon PF system that I am putting together.  My question is, do I set the timer up for monstable mode or astable mode and which capacitor do I use.  I plan to hook the timer to a RS#275-232 relay.  There are so many choices that this novice needs a little(well a lot of) expert advice.  Thanks.  Lew
 

wfontjr

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monostable, i not sure which cap you are asking about, i am not familiar with the ramsey timer, the simplest timer for me has been to use the auto switch on a ms20 and the welby one shot timer
 

Lew

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wfontjr,  Thanks for the help.  The Ramsey kit comes with three capacitors and says to use the one that is best for your application.  If I don't get some expert advice I will just try the old, "trial and error" method.  Lew
 

wfontjr

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which pin does the capacitor go on, if its on pin 6/7 its used to set the time the relay is tripped, the higher the cap the longer the trip, if it used on pin 2 its part of the trigger, im not exactly sure i understand what increasing the cap does here
 

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