Successful watchdog timer relay for High-Risk Applications
Reliable watchdog timer relay Designs for Commercial and Industrial Applications
CHINA – ?¡ãAny Electronics?¡À proudly presents their whole range of watchdog timer relay . They provide a total set of watchdog timer relay items and other interrelated items. These units are observed in distinct applications which include commercial applications, industrial manage circuits and OEM Panels. These devices include outstanding precision and repeatability. The typical watchdog timer relay which might be designed lately need very small panel space.
Successful watchdog timer relay for High-Risk Applications
Reliable watchdog timer relay Styles for Industrial and Industrial Applications
CHINA – ?¡ãAny Electronics?¡À proudly presents their complete variety of watchdog timer relay . They provide a full set of watchdog timer relay goods as well as other interrelated items. These units are seen in diverse applications such as commercial applications, industrial control circuits in addition to OEM Panels. These devices come with great precision and repeatability. The common watchdog timer relay that are designed today require really small panel space.
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Kazoo M asked Mini controller project required?
I am somewhat new to this type of control device and require your assistance as to how i should approach my project. I require the ability to turn on/off six independent outputs that will later be configured to bias 6 basic common emitter transistors (2N2222). The latter small relays (12VDC/1A) will control an audio path etc.. However, the controller will be required to remember its last state before being turned off, the latter will allow the controller once turned on to resort back to its last state. Example: The 6 relays (outputs) during the time the conrtoller is ON may be in different positions (open ~ closed), once the controller is turned OFF and then back ON it is important that the latter control states are re-initiated prior to when the controller was turned off etc... *** This is not a homework project and i have no desire to use latching relays *** Artwork concept: http://i4.photobucket.com/albums/y109/emperor500/minicontrollerproject.jpg Thank you
And got the following answer:
See my answer under: http://answers.yahoo.com/question/index;_ylt=AkfvLCa5Jt0Rcb.vPVZ8AQgjzKIX;_ylv=3?qid=20080614130311AAWB3li PIC has a nanowatt line which uses little power. Here's a selector: http://www.microchipdirect.com/Chart.aspx?branchId=54&mid=1&treeid=1 The 16F882 is a nice device. It has the self-write, lots of I/O, and is way overkill, but still only costs a buck. It runs from 2V to 5.5V, so you need regulator to run it off 12V. 3V lithium cell backup with germanium diode could keep memory. Run it at 32kHz to get probably about a 10uA draw. Use the watchdog timer to cut this to about 2uA. Also, can use self-write variant for permanent storage, possibly in lieu of backup battery. Also have LCD driver variants, perhaps they have higher voltage outputs that could reduce part count. I would use n-channel FETS for the drivers, not the 2N222's. This allows the PIC output drivers to stay at legal voltages, because the gates are isolated. Make sure the voltage you run the PIC at turns on the FET adequately. I believe some are in the 2V range, many are within 5V. U can use LED's instead of LCD. Use 1mA or 2mA diodes, big resistors to drop current low if less intensity acceptable. Put them in parallel with solenoids. Put the LED power supply thru a single additional FET if you want to be able to turn them off for power saving.
The watchdog timer relay work very well with diverse applications which are distinct to power distribution and protection. The relays come with wide adjustment ranges using a scale that is definitely simple to study either in three or four digits as outlined by the model. These watchdog timer relay assistance in rising the flexibility on the applications, decrease the general energy and maintenance expenses. You’ll find relays which are applied for common purposes which are available in reputable styles with rapid replacement possibilities. And you will find models which might be utilised for industrial applications and heavier duty applications that perform on significant loads. These merchandise are created to meet the lifetime industrial handle desires of the applications.
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