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#1
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
Anyone make an off-the-shelf timer that I can trigger and it'll run
for X-hours then operate a relay? Or do I have to roll my own? ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: skypeanalog | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
#2
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
On Mon, 02 Jun 2014 16:43:22 -0700, Jim Thompson
wrote: Anyone make an off-the-shelf timer that I can trigger and it'll run for X-hours then operate a relay? Or do I have to roll my own? ...Jim Thompson --- http://www.grainger.com/search?searchQuery=timer |
#3
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
On Mon, 02 Jun 2014 19:19:32 -0500, John Fields
wrote: On Mon, 02 Jun 2014 16:43:22 -0700, Jim Thompson wrote: Anyone make an off-the-shelf timer that I can trigger and it'll run for X-hours then operate a relay? Or do I have to roll my own? ...Jim Thompson --- http://www.grainger.com/search?searchQuery=timer I want something I can _trigger_, preferably _retriggerable_, off the shelf. I could do my own, but I'm lazy ;-) ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: skypeanalog | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
#4
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
In article , To-Email-Use-
says... Anyone make an off-the-shelf timer that I can trigger and it'll run for X-hours then operate a relay? Or do I have to roll my own? ...Jim Thompson http://www.newark.com/magnecraft/tdr...elay-dpdt-10h- 120vac/dp/69H7951 You'll also need a socket.. Jamie |
#5
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
"Jim Thompson" wrote in message ... Anyone make an off-the-shelf timer that I can trigger and it'll run for X-hours then operate a relay? Or do I have to roll my own? ...Jim Thompson http://www.altronix.com/products/ins...tions/6062.pdf |
#6
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
Jim Thompson wrote:
I want something I can _trigger_, preferably _retriggerable_, off the shelf. I could do my own, but I'm lazy ;-) ...Jim Thompson This is a classic industrial control component, there are thousands of variations. The retriggerable thing constrains the number of modules that will work for this case, but I'm pretty sure that many of the modules have such an option. Jon |
#7
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
On 6/2/2014 7:43 PM, Jim Thompson wrote:
Anyone make an off-the-shelf timer that I can trigger and it'll run for X-hours then operate a relay? Or do I have to roll my own? ...Jim Thompson Start with something like this for $5.00: http://www.harborfreight.com/lamp-an...mer-40148.html and add whatever roll your own trigger you want. Plug a wall wart into it to power the relay. Ed |
#8
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
On Wed, 04 Jun 2014 02:03:47 -0400, ehsjr wrote:
On 6/2/2014 7:43 PM, Jim Thompson wrote: Anyone make an off-the-shelf timer that I can trigger and it'll run for X-hours then operate a relay? Or do I have to roll my own? ...Jim Thompson Start with something like this for $5.00: http://www.harborfreight.com/lamp-an...mer-40148.html and add whatever roll your own trigger you want. Plug a wall wart into it to power the relay. Ed How do you _retrigger_ a mechanical timer ?:-) ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: skypeanalog | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
#9
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
In sci.electronics.basics Jim Thompson wrote:
Anyone make an off-the-shelf timer that I can trigger and it'll run for X-hours then operate a relay? Or do I have to roll my own? You can buy them. I'd start with Panasonic- they're cheaper than omron, and usually less complex to deal with. their support is complete garbage though, not that you'd need it for a timer. Keep in mind that programming the digitals ones can be infuriating and involves map folded, poorly translated, japanese sofware logic with bonus 7 other irrelevant dead languages datasheets. here's the start page http://pewa.panasonic.com/automation-controls/timers/ If accuracy is not critical, the versions with dial are easy. these things tend to be cheapest off ebay of all places. Grainger will take you for a serious ride if you go that route. |
#10
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
On Wed, 4 Jun 2014 18:04:11 +0000 (UTC), Cydrome Leader
wrote: In sci.electronics.basics Jim Thompson wrote: Anyone make an off-the-shelf timer that I can trigger and it'll run for X-hours then operate a relay? Or do I have to roll my own? You can buy them. I'd start with Panasonic- they're cheaper than omron, and usually less complex to deal with. their support is complete garbage though, not that you'd need it for a timer. Keep in mind that programming the digitals ones can be infuriating and involves map folded, poorly translated, japanese sofware logic with bonus 7 other irrelevant dead languages datasheets. here's the start page http://pewa.panasonic.com/automation-controls/timers/ If accuracy is not critical, the versions with dial are easy. these things tend to be cheapest off ebay of all places. Grainger will take you for a serious ride if you go that route. Everyone is missing that key word "trigger". I need to hit it with a pulse and have it run for X-hours, then reset... and wait for the next trigger.... maybe just a pile of 74HC283's ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: skypeanalog | | | Voice480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food. |
#11
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
Everyone is missing that key word "trigger". I need to hit it with a pulse and have it run for X-hours, then reset... and wait for the next trigger.... maybe just a pile of 74HC283's ...Jim Thompson Jim, http://www.mcmaster.com/#additional-relays/=s9jqfn Has 8 different timing functions. You could use the "Interval" function. Apply power and it starts to time for the desired delay and then turns off. To restart, re-apply power. Regardless, one of the other functions may work better for your application. I would suggest searching McMaster Carr, WW Grainger sites for a suitable delay timer for the voltage and function you desire. Mfg's that comes to mind Omron, SSAC, Omega, Veeder Root, Eagle Signal, etc etc. http://www.ssac.com/products.php?cat=22 Les |
#12
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
In sci.electronics.basics Jim Thompson wrote:
On Wed, 4 Jun 2014 18:04:11 +0000 (UTC), Cydrome Leader wrote: In sci.electronics.basics Jim Thompson wrote: Anyone make an off-the-shelf timer that I can trigger and it'll run for X-hours then operate a relay? Or do I have to roll my own? You can buy them. I'd start with Panasonic- they're cheaper than omron, and usually less complex to deal with. their support is complete garbage though, not that you'd need it for a timer. Keep in mind that programming the digitals ones can be infuriating and involves map folded, poorly translated, japanese sofware logic with bonus 7 other irrelevant dead languages datasheets. here's the start page http://pewa.panasonic.com/automation-controls/timers/ If accuracy is not critical, the versions with dial are easy. these things tend to be cheapest off ebay of all places. Grainger will take you for a serious ride if you go that route. Everyone is missing that key word "trigger". I need to hit it with a pulse and have it run for X-hours, then reset... and wait for the next trigger.... maybe just a pile of 74HC283's yes, you can trigger any of these, they're fully electronic- even the ones with the clear knob. |
#13
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
On Wed, 04 Jun 2014 07:13:26 -0700, Jim Thompson
wrote: On Wed, 04 Jun 2014 02:03:47 -0400, ehsjr wrote: On 6/2/2014 7:43 PM, Jim Thompson wrote: Anyone make an off-the-shelf timer that I can trigger and it'll run for X-hours then operate a relay? Or do I have to roll my own? ...Jim Thompson Start with something like this for $5.00: http://www.harborfreight.com/lamp-an...mer-40148.html and add whatever roll your own trigger you want. Plug a wall wart into it to power the relay. Ed How do you _retrigger_ a mechanical timer ?:-) Give its knob another twist. |
#14
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
On Wed, 04 Jun 2014 11:10:24 -0700, Jim Thompson
wrote: On Wed, 4 Jun 2014 18:04:11 +0000 (UTC), Cydrome Leader wrote: In sci.electronics.basics Jim Thompson wrote: Anyone make an off-the-shelf timer that I can trigger and it'll run for X-hours then operate a relay? Or do I have to roll my own? You can buy them. I'd start with Panasonic- they're cheaper than omron, and usually less complex to deal with. their support is complete garbage though, not that you'd need it for a timer. Keep in mind that programming the digitals ones can be infuriating and involves map folded, poorly translated, japanese sofware logic with bonus 7 other irrelevant dead languages datasheets. here's the start page http://pewa.panasonic.com/automation-controls/timers/ If accuracy is not critical, the versions with dial are easy. these things tend to be cheapest off ebay of all places. Grainger will take you for a serious ride if you go that route. Everyone is missing that key word "trigger". I need to hit it with a pulse and have it run for X-hours, then reset... and wait for the next trigger.... maybe just a pile of 74HC283's ...Jim Thompson Not many 'retriggerable' ones there. Roll your own, 1sec oscilliator fed into a couple of 4017's? I have a simple one that does 2 4 &8 hrs. Cheers |
#15
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
In article ,
Jim Thompson writes: Everyone is missing that key word "trigger". I need to hit it with a pulse and have it run for X-hours, then reset... and wait for the next trigger.... maybe just a pile of 74HC283's If you are happy writing a bit of software, one of the really tiny micros will do whatever you want in this area. PICs and AVRs come in 8 pin packages with a reasonably good internal clock so one chip is all you need. No xtal, no Rs and Cs for timing... -- These are my opinions. I hate spam. |
#16
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
On 6/4/2014 10:13 AM, Jim Thompson wrote:
On Wed, 04 Jun 2014 02:03:47 -0400, ehsjr wrote: On 6/2/2014 7:43 PM, Jim Thompson wrote: Anyone make an off-the-shelf timer that I can trigger and it'll run for X-hours then operate a relay? Or do I have to roll my own? ...Jim Thompson Start with something like this for $5.00: http://www.harborfreight.com/lamp-an...mer-40148.html and add whatever roll your own trigger you want. Plug a wall wart into it to power the relay. Ed How do you _retrigger_ a mechanical timer ?:-) ...Jim Thompson A flip flop and a one shot: Modify it to stop after 24 hours. Your roll your own trigger circuit (FF + triac, relay, whatever) latches on, but you'll need to add something mechanical to the appliance timer to reset your circuit when the timer reaches 24 on the dial. Functional diagram: ----------- input pulse---|Jim circuit| ----- | | |Timer|---timer ac out---relay AC in---|ACin ACout|------| | | | | |---+ ----------- ----- | | | +---------Reset--------+ Input pulse to flip flop, one shot to reset it comes to mind, but I'll call it your circuit as it will include more than a flip flop. The input pulse turns your circuit on, which sends ac to the timer, starting it. After the timer has produced AC out to the relay for the amount of time you set, it drops timer ac out, but keeps turning, because your circuit has not been reset. If you can mod the timer to trigger a one shot when the dial hits 24 to produce a reset signal to turn your circuit off, that will leave the timer at 24, awaiting the next trigger pulse. Your original post mentioned a duration of up to 23 hours, implying an interval between trigger pulses of greater than one day. If that interval is less than a day or you can't mod the timer, then this approach is no good for you. Ed |
#17
Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Timer Question
On Wed, 04 Jun 2014 11:10:24 -0700, Jim Thompson
wrote: On Wed, 4 Jun 2014 18:04:11 +0000 (UTC), Cydrome Leader wrote: In sci.electronics.basics Jim Thompson wrote: Anyone make an off-the-shelf timer that I can trigger and it'll run for X-hours then operate a relay? Or do I have to roll my own? You can buy them. I'd start with Panasonic- they're cheaper than omron, and usually less complex to deal with. their support is complete garbage though, not that you'd need it for a timer. Keep in mind that programming the digitals ones can be infuriating and involves map folded, poorly translated, japanese sofware logic with bonus 7 other irrelevant dead languages datasheets. here's the start page http://pewa.panasonic.com/automation-controls/timers/ If accuracy is not critical, the versions with dial are easy. these things tend to be cheapest off ebay of all places. Grainger will take you for a serious ride if you go that route. Everyone is missing that key word "trigger". I need to hit it with a pulse and have it run for X-hours, then reset... and wait for the next trigger.... maybe just a pile of 74HC283's ...Jim Thompson --- Maybe, but hey, it's kinda slow around here... If you like, I'll build one for you, all hardware... 1. Power source: mains, batteries, ??? 2. Timeout: If fixed,period? If settable/programmable, min/max periods? 3. Accuracy? 4. Trigger/retrigger source? 5. Relay contact ratings? Email me if you're interested. John Fields |
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