Electronics > Projects, Designs, and Technical Stuff
doser pump solutions
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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