Safes Collectors
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Exaco Trading ECO-2000 2.4 Gallon Kitchen Compost Waste Collector $18.20 Kitchen Compost Collector Pail Makes Composting Easy The Kitchen Compost Collector makes it easy to collect your organic waste to add to your composter. Includes a carbon filter that significantly reduces any odors 2.4 gallon capacity Replacement carbon filters available Measures 8.5″L x 9″W x 11″H Ships Quickly! An Exaco Trading Design EXACO USA Ltd. is a family owned company in Austin, Texas. Th… |
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EcoSafe GKL032195-1 2-1/2-Gallon Compostable EcoBio Bags, 25-Count $4.50 Compostable bags for mini kitchen organics made with ecosafe compostable plastic.25 – 2.5 gallon bags per box.Size2.5 GALLONColor GREENBCI – 066050… |
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OXO Good Grips 4-Cup Fat Separator $11.00 Tired of forking out bits of fat from your otherwise perfect gravy? Is straining the gravy too much of a hassle? If so, start using OXO’s SteeL gravy fat separator to quickly separate fat from gravy on the go. Constructed of heat resistant plastic, the separator has a strainer which catches the unwanted bits and keep the fat floating on the top of the gravy. The stopper prevent fat from floating u… |
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Backtracks (2CD+DVD) $22.93 Detailed item info Track listing DISC 1: 1. Stick Around 2. Love Song 3. Fling Thing 4. R.I.P. (Rock In Peace) 5. Carry Me Home 6. Crabsody In Blue 7. Cold Hearted Man 8. Snake Eye 9. Borrowed Time 10. Down On the Borderline 11. Big Gun 12. Cyberspace DISC 2: |
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Courage to Grow $8.19 13 TRACKS: 1) Courage To Grow 2) Hear Like A Lion 3) Safe And Sound 4) Feeling Alright 5) Ordinary Girl 6) R Way 7) Attention Span  Green To Black 9) On My Mind 10) Running 11) Nightcrawler 12) Other Side 13) Safe And Sound Dub…
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The Old Farmer’s Almanac Video ~ Volume 1 VHS Tape. Premiere Edition. Volume 1. Hosted by the timeless Willard Scott and guest starring the irrepressible Jonathan Winters, this VHS covers the usual bizarre humor and unusual information brought to us through the Farmer’s Almanac since 1792…. |
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I Dream Of Jeannie Collector’s Edition: Safe Keeping 77. Genie, Genie, Who’s Got the Genie? (1)Tony accidentally locks Jeannie in a moon safe and tries desperately to get her out before it is sent to the moon. 78. Genie, Genie, Who’s Got the Genie? (2)After hiring two Safecrackers(Charlie,and the Professor)Tony,and Roger find that they had been double-crossed. They were robbed. Tony’s concern is,if the Professor,and Charlie try to open that safe wit… |
Is it safe to put a load connected to the emitter of an NPN transistor?
Usually people add the load to the collector, but I have a special case in which I have a relay connected to the collector, as is usually the case. But I also need to connect a BiLED to the emitter in order for the design to operate correctly. Is this bad form? The schematic is located @ http://tinyurl.com/o8ocp
D8 allows for 1 coil to act as an OR sensor, it goes on when either transistor is saturated, making it only possible to put the BiLED (which only has one GND lead) at the emitter.
I could put the LED in parallel, if i used 2 LEDs and added one more Diode right before the collector and attach the LED lead directly to the collector
This is just a snippet and modified version from a whole schematic. In the full schematic a 10k resistor is placed at each of the transistors bases.
Your circuit is not complete.
There is nothing to limit the current into the bases so you need to add a resistor in series with each base. 10k will be ok.
The circuit should work but you should ensure that each relay coil’s resistance is at least 300 ohms otherwise the collector-emitter current will exceed 20mA which is the normal maximum for a common red l.e.d.
Having a load in both collector and emitter is unusual so it doesn’t at first sight fall into either of the normal categories of ce, cb or cc.
In passing I would mention a previous correspondent’s error.
The emitter follower is the common collector configuraion.
Your circuit may be considered common collector (emitter follower) for the l.e.d. loads, and common emitter for the relay loads.
Addendum:
I have just read the previous post. Conecting the l.e.ds and their current limiting resistors in parallel with the relay coils is the way I would do it too. But you may have some undisclosed reason for doing it your way.
Safes Collectors
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