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doser pump solutions

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patrick1:
for the 555,  you will need too add a component, which is why it is not working in calculator.

a diode is required too charge the capacitor via your pin 6 ? 2 link wire.   stick the diode between pin 7 and pin 6, - with current being aloud too flow in that direction too.

however if you use my circuit, - any 555 timer values will work, - even if your on time is 50/50  or 60/40,  - my circuit will just output a brief pulse in response too any input, and reset itself for the next pulse.  ... so basically you just need a 555 timer set too 10 seconds, - and  the output will go into my pulse circuit,   the output of which, is fed backwards through a zener too flatten it, - or forwards through a short string of diodes too flatten the signal   ....    and the results of that rigmoreall  will go into your drive transistor.

peace.

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