Help velleman mk 111

Thread Starter

Molly

Joined May 7, 2009
2
Please can someone help with the pulse time and the dalay time .
I want to adjust the pulse time to 1 minute and the delay time to 5 minutes. I
Can send an email of the circut if it helps or the velleman web site mk111 showed the timer.
Many thanks
Molly
 

bertus

Joined Apr 5, 2008
21,161
Hello Molly,

For longer timings you will need longer RC times.



RV1 sets the pulse timing in combination with C3
RV2 sets the pause timning in combination with C3
Increase C3 to 680 μF and the max pause time will be about 6.8 minutes.
increase RV1 to 220 K and the max pulse time will be about 1.5 minutes.

Greetings,
Bertus
 

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