Can you name this resistor?
- Thread starter hdossett
- Start date
Metal-Marc
Well-known member
Ok. I was latterly confused!
Old Man Roger
Well-known member
Ironic
New opener is installed and programmed. Lots of parts left over. Had to follow instructions to get it all together so my man card may be suspended for a while. But I did throw away the programming instructions as it was much easier to figure it out without them. So I should get my man card back soon. The parts bags were color coded, took me a while to figure that one out!
RPH
Well-known member
In admitting that your man card is in possible revocation. The members will meet in private and vote on said revocation. It may vary from none to permanent revocation.
Please wait for final judgement of the members.
Plead, whilst you can!
Well, I did work on the old one for a month or so while not knowing what I was doing. And I did throw the instructions away before finishing the task. Then there was all the parts left over, that in and of itself is worth a lot. And don't forget that I used spell check to introduce a couple of words that made no sense in context. The only sad part is that I did not use the word 'whilst' in the whole thread!
And, just for the record, my son posted this on Facebook about a month ago
...
This weekend I was putting up a tent with my oldest daughter. I suggested double checking the instructions and she said "we definitely don't need the instructions" I asked her if she knew who she sounded like and her instant reply was "Grandpa Harold, of course." She's not wrong!
...
...
This weekend I was putting up a tent with my oldest daughter. I suggested double checking the instructions and she said "we definitely don't need the instructions" I asked her if she knew who she sounded like and her instant reply was "Grandpa Harold, of course." She's not wrong!
...
Old Man Roger
Well-known member
Lol
RPH
Well-known member
Whilst, it’s under consideration. Don’t cry like a little girl. I’m sure the forum will be gentle.
Old Man Roger
Well-known member
His man card is under review. The alleged violation was statue 101, reading of the directions. It can be a serious violation depending on the situation.
In this scenario, unfortunately for him, post count plays a big part.
RPH
Well-known member
So, what does the forum rule?
I vote to return card on provisional basis.
I vote to return card on provisional basis.
G1K
Well-known member
FWIW, that particular resistor should be named Locutus.
Thanks, I'll be here all night.
Ryan
Because identifying its resistance was futile...Thanks, I'll be here all night.
Ryan
Old Man Roger
Well-known member
Lol
kaffine
Well-known member
It's quite clear the middle two are different colors, and reading left to right, #3 is darker than #2. #4 looks to have some remnants of shininess, and so appears to be a gold tolerance band. There's another nearby green resistor with a gold band as well.
So from left to right, my guess is:
Dirty white (or maybe yellow?)
Red
Brown
Gold
So that's, uh, erm...
9
2
x10Ω
-----
920Ω +-5%
Resistor Calculator
This resistor calculator converts the ohm value and tolerance based on resistor color codes and determines the resistances of resistors in parallel or series.www.calculator.net
I have no idea whether that actually makes sense or is an actual component one can buy, mind you.
But #3 could be an overheated orange, perhaps? Basically, #2 and #3 could be red, orange, brown, or maybe even violet depending on what you think the effects of overheating and age might have been.
Personally, I'd try to wipe off some of the grunge with WD-40 or alcohol or similar and get some good strong incandescent (full spectrum; not LED) lighting in there. If that doesn't bring any enlightenment, maybe try scraping or lightly polishing or sanding part of it. The paint is not very thick, but it you can abrade the top layer of grunge off, you might get somewhere.
Or is this just an academic exercise? That board looks to be in pretty rotten shape overall.
Resistor color codes were just a rotten idea from the beginning, and are one of those maddening little archaisms that's still hanging around. Differences in human color perception can be very pronounced (even in person and not altered by a camera and computer screen). Diagnosable color blindness is fairly frequent, and pretty much everyone perceives color differently to greater or lesser degrees.
Stir in manufacturer variations in paint color, thickness, and application, not to mention the wildly varying effects of age, dirt, and heat, and you've got a ridiculous mess of mysteries.
I haven't seen resistor color codes in the 5 years I've worked for an electronics manufacturer. They are all too small to put the color code on anymore. Hell some of them I have to poke with a stick to make sure it is installed and not a shadow, even looking through a microscope. Kind of wonder if they even still teach it at school with surface mount being the norm now.
Another way to help narrow it down is to lookup common resistor values and figure for the most part the resistor will be one of them. Occasionally we will use an odd value resistor but for the most part we try to stick to the standard values to limit how many values we have to stock. There is an issue of a few different standard value tables being used.