Tutorial on the Long-Tailed Pair Differential Amplifier - Page 1
Forum section: electronics / testgear

author: w2aew
author_rank: Super Contributor
timestamp: February 02, 2015, 08:24:53 pm
content: i posted this on my YouTube channel a few days ago, now posting here in case you missed it...Here is a quick 1 minute preview clip, showing a visual "mechanical" simulator of the circuit operation:If you like the preview and want to see more, here's the full 20 minute Back to Basics style tutorial:

author: w2aew
author_rank: Super Contributor
timestamp: February 02, 2015, 08:27:40 pm
content: Oops! Hey sysops, can you move this to the Beginners section please?

author: malch
author_rank: Regular Contributor
timestamp: February 02, 2015, 10:37:43 pm
content: Watched it when you upped it.  I like all your stuff.

author: Oddball
author_rank: Contributor
timestamp: February 12, 2015, 04:07:30 am
content: Honestly the mechanical simulator is a great idea for teaching how these work. I was one to always think of them as open differentials in cars, while not 100% correct in the common mode sense, visual indicators like this are great.

author: rx8pilot
author_rank: Super Contributor
timestamp: February 12, 2015, 05:35:56 am
content: "sysops"...... Classic!

author: Mechatrommer
author_rank: Super Contributor
timestamp: February 13, 2015, 12:05:25 am
content: 10 thumbs up. i clicked like button in youtube several time i hope it got throughi didnt aware there is also current mirror video, a always a mystery for me, now its easier to understand in a video. thank you!

author: w2aew
author_rank: Super Contributor
timestamp: February 13, 2015, 03:03:30 am
content: Quote from: rx8pilot on February 12, 2015, 05:35:56 amHmm, maybe the moderators didn't realize that "sysops" was referring to them. I guess I'm showing my age.Ok, heymoderators, can you move this to the Beginners section?

author: rx8pilot
author_rank: Super Contributor
timestamp: February 13, 2015, 03:07:37 am
content: You are not showing your age, you are revealing your wisdom. For that, we thank you.Really enjoy your videos, so helpful and interesting.

author: c4757p
author_rank: Super Contributor
timestamp: February 13, 2015, 03:15:20 am
content: Quote from: w2aew on February 13, 2015, 03:03:30 am

author: nuno
author_rank: Frequent Contributor
timestamp: February 13, 2015, 05:31:59 pm
content: Very, very good w2aew!Why don't they teach like this at school?

author: rx8pilot
author_rank: Super Contributor
timestamp: February 13, 2015, 06:38:11 pm
content: You have a very easy to follow style. When I look at the 'back to basics' videos, I feel like I should already know it but I there is always some nugget in there that I never knew. Choice of topics has been good as well, answering questions that I did not know to ask.

author: w2aew
author_rank: Super Contributor
timestamp: February 13, 2015, 07:39:33 pm
content: Quote from: nuno on February 13, 2015, 05:31:59 pmWell, if *I* was a teacher at a school, *I* would teach like this. Alas, I am not a teacher, I just play one on YouTube.

author: nuno
author_rank: Frequent Contributor
timestamp: February 13, 2015, 08:28:50 pm
content: Quote from: w2aew on February 13, 2015, 07:39:33 pmAnd a damn good one

author: dadler
author_rank: Unknown
timestamp: February 13, 2015, 10:35:06 pm
content: Quote from: w2aew on February 02, 2015, 08:27:40 pmRemember when we used to dial in to "message boards"?

author: Bud
author_rank: Super Contributor
timestamp: February 14, 2015, 03:44:28 pm
content: I thought my Fluke 87v display is dark because it is defective, but i could see in this and other OP videos it is noticably darker too compare to other multimeters on the bench. Sometimes i have to turn the backlight on to see the display well. Is that normal on Fluke 85's ?

author: w2aew
author_rank: Super Contributor
timestamp: February 14, 2015, 04:18:09 pm
content: The 87s that I've used over the years have typically had slightly darker displays than some other models, not sure why.