Hy, first I sorry for my english
I want to make a simple mono stable 555 timer circuit. I use the sa555 because is guaranteed high temperature range (-20 to +85). I was make the circuit its work to 25 seconds, but if I setup 30 seconds ore more that don't want to turn off (tested in -10 C, in normal conditions - room temperature all its ok but if go out in -10 -15 don't work).
I want to make a feeder.
Components what I use:
SA555 timer
relay
10k resistor
100uF capacitor
47uF capacitor
2×10nF capacitor
500KR for 1-60 seconds
Thanks for response
I don't now where is the problem all components what I use is in the range -20C+85C
I want to make a simple mono stable 555 timer circuit. I use the sa555 because is guaranteed high temperature range (-20 to +85). I was make the circuit its work to 25 seconds, but if I setup 30 seconds ore more that don't want to turn off (tested in -10 C, in normal conditions - room temperature all its ok but if go out in -10 -15 don't work).
I want to make a feeder.
Components what I use:
SA555 timer
relay
10k resistor
100uF capacitor
47uF capacitor
2×10nF capacitor
500KR for 1-60 seconds
Thanks for response
I don't now where is the problem all components what I use is in the range -20C+85C
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