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Old 4th April 2003, 09:04 PM   (permalink)
Default Feeder Timer

Does anyone have a schematic diagram of how to make a timer that can be used to run a feeder? Perhaps a timer than will close a circuit for a few seconds and leave it open for an extend period. Thanks for your help in advance.
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Old 5th April 2003, 06:53 AM   (permalink)
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A basic timer could consist of monstable cct based on a 555, do you a few more details, like timing duration, and more application specifics ?
Chippie is offline   Reply With Quote
Old 5th April 2003, 07:26 AM   (permalink)
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Since he requires cyclic on/off of feeder, he should go for astable oscillator instead of monostable.
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kinjalgp is offline   Reply With Quote
Old 5th April 2003, 07:35 AM   (permalink)
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Quote:
Originally Posted by Chippie
A basic timer could consist of monstable cct based on a 555, do you a few more details, like timing duration, and more application specifics ?
I agree it could be astable configured, but until we know a few more specifics......either could be used.....depends if he wants single shot operation or continuous..... 8)
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Old 6th April 2003, 09:34 PM   (permalink)
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What about two 555 timers in astable configuration (or a single 556)? One that would run for about a day. When it activates, a feeding motor turns 'on' and runs for a duration set by the second timer. Guess it depends somewhat on the way the feeder is to operate - mechanically. It would be nice to see more detail from bdancer.
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