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A very thorough explanation however the last example was difficult for me to visualize. I think that it would be nice if he created a real world physical example using the potentiometer in the same way as did a real world example with capacitors and diodes. Anyway great explanation.
What is the difference application between the two arrangement of the circuits? (one by using all 3 pins of the potentiometer and another only uses two pin). It seems to me that both have the same function of varying the resistance. Or is there any other thing I missed?
Seems like A B C are used for turning up your volume or turning it down A and B applications where its only 2 are used in dimmable lights, so that you can go from 0% on 50% on them the max 100%
I have a question about why a potentiometer used as a volume control needs to have three lugs. It seems that in an audio circuit, the first lug goes to the input signal, the middle lug (wiper) is the output (coming out from the pot) and the third lug goes to ground. I assume this means that the balance of the current (the current that does not go out the wiper) goes to ground, unless the wiper is all the way at the "max volume" end and in that case all current goes out the wiper. Is that correct? What would happen if there was no connection to ground, and the current could go only out the wiper but not down the rest of the track and out to ground?
If you don't ground the lug, then it's not a voltage divider. That is, it's not putting a constant load on the pot and not acting like a real volume control. It's become a variable resistor in line with the output, which is essentially a tone sucker. No. Don't do that.
So which would I use to control the output from an air blower on a coffee roaster? Or temperature into the roast chamber? I’m a simple man please answer in simple terms. I think they’re both the voltage one, but I’m probably wrong.
Thanks for the info,i want to know the diffent type of pots : Log, typeA,typeB, ETC. for example my audio amp. has a volume cont. 10k A , i cant find 10k A,i buy a 10k B if i intall type B, will it affect the quality or loudness of my amplifer? Tnx
Can I use some of the concepts described in this video for a video on controller aiming? I will link the video in the description and provide proper citation.
My setup calls for a 35K ohm pot. Can I use a higher value such as 40 or 50K. If I do, what will happen? Will I prevent signal from leaving amp and damage components in my amp? Thanks.
Can I solder a normal 100 kOhm resistor to a 100 kOhm multiturn potentiometer in order to get to 200 kOhm? Can't find a 200 kOhm multiturn potentiometer!
At 8:14 you say the brightness of the lightbulb is directly proportional, maybe I'm misunderstanding but did you mean inversely proportional? Since if one value is changed down, the other goes up? I thought directly proportional meant if one value is changed up, the other value goes up, and vice versa. Thanks for this video! I'm not even in class, but I still learned something.
That's true.if you move towards point A this means you are bypassing the resistor,which leads to a brighter light-bulb and vis-versa.l think he has reversed the situation.
Potentiometers are adjustable resistors and are not variable resistors. The difference is that potentiometers or adjustable resistors have 3 terminals and variable resistors have 2 terminals.
