I need a few things someone here might know where to find... First is a line monitor relay like to monitor the AC line. Could be 120 or 240V, even 24V if need be.
And since none of them I've found have a suitable delay; a Delay-on-Operate relay of 2-5 minutes. Not Glass Amperite [too slow to reset] but likely octal plugin in. Could be 24VAC or 5/12DC....
Suggestions -- surplus or new -- welcome...
-- A host is a host from coast to coast.................wb8foz@nrk.com & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433
If you want to spend money!
-- "I'm never wrong, once i thought i was, but was mistaken" Real Programmers Do things like this. http://webpages.charter.net/jamie_5
David,
Have built many delay on make delay on make and delay on off and could to "custom" relay to match load. By separating the delay timing circuit and the relay, each can be optimized inidivdually. Let me know if you want me to manufacture some for you!
Marc Popek
Thanks but the delay is the easy part. Many sources for same; would prefer non-new pricing.
Based on futile Googling, ebay and such; looks like voltage monitor will be new as well.
-- A host is a host from coast to coast.................wb8foz@nrk.com & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433
You may be able to build what you want safely and easily.
Use a transformer to drop the voltage to 12, single diode rectify, filter and use a comparator to detect high or low. The same 12V secondary voltage can be used as input to the regulated power supply to run the circuit. Use a separate rectifier. Conceptually: D2 +---->|---+-----+ ----- | | + | |XFORM|----------+ [C2] [POT]---> to comparator AC=| 12V | | | | | |---Gnd | Gnd Gnd ----- [D1] | +-----[VReg]---+--- Vcc | + | [C1] [R1] | | Gnd +---> Vref To comparator | [R2] | Gnd
The voltage at C2 will vary as the AC mains varies and the comparator will respond. You can configure a window comparator to provide a "power good" output when the voltage is higher than some minimum and lower than some maximum. The output can be fed to a relay driver or a delay circuit and then a relay.
It will be cheaper than anything you can buy new to do the job.
Ed
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.