timer circuit
Need a ckt. that will give me 2to5 sec. pulse every 1to2 minutes. Would
prefer not to get involved with a microP. Thanks. CP |
timer circuit
On Fri, 13 Apr 2012 17:30:22 -0700, Pilgrim
wrote: Need a ckt. that will give me 2to5 sec. pulse every 1to2 minutes. Would prefer not to get involved with a microP. Thanks. CP If accuracy isn't critical ( 10% variation either way is OK), then a pair of 555 timers (or a 556 dual timer) could provide what you specified. If timing accuracy is critical, then a simple micro like the PICAXE (under $5, programmed in BASIC) would be a better choice. For even better accuracy, you can add a crystal as the clock source and have one or two seconds per day timekeeping accuracy. |
timer circuit
"Pilgrim" wrote in message ... Need a ckt. that will give me 2to5 sec. pulse every 1to2 minutes. Would prefer not to get involved with a microP. Thanks. CP Google "555 timer". |
timer circuit
Pilgrim wrote in news:pilgrim-3B1BFC.17302213042012@
70-3-168-216.pools.spcsdns.net: Need a ckt. that will give me 2to5 sec. pulse every 1to2 minutes. Would prefer not to get involved with a microP. Thanks. CP buy two timing relays. |
timer circuit
"Pilgrim" Need a ckt. that will give me 2to5 sec. pulse every 1to2 minutes. ** Do the above two ranges need to be independently adjustable - or is that the tolerance band ? You need to be FAR more specific. .... Phil |
timer circuit
In article ,
"Phil Allison" wrote: "Pilgrim" Need a ckt. that will give me 2to5 sec. pulse every 1to2 minutes. ** Do the above two ranges need to be independently adjustable - or is that the tolerance band ? You need to be FAR more specific. ... Phil Yes, they should be ind. adj. Accuracy is not important. Thanks CP |
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