Jim Williams' Test Your Analog Design IQ #22

  Рет қаралды 53,986

devttys0

devttys0

Күн бұрын

Today we examine question #22 from Jim Williams’ Test Your Analog Design IQ: How to get -20V out of an LM741 op-amp running from a +-15V supply?

Пікірлер: 61
@pratikahir148
@pratikahir148 4 жыл бұрын
These kinda videos can be so resourceful!!!!
@ohmedarick1
@ohmedarick1 6 жыл бұрын
Excellent video. I enjoyed watching over and over. Thank you... Keep them coming.
@mannesq
@mannesq 5 жыл бұрын
Great video at a perfect pace. Please make some more!
@drulli1
@drulli1 7 жыл бұрын
Excellent video. I very much like your the detailed explanations of the underlaying electronic principles. Thank for investing your time. Looking forward for more videos..
@jimadams2473
@jimadams2473 8 жыл бұрын
Very good instructional videos. And the book by Jim Williams is awesome, too. i like your pace and delivery. Very clear and organized. Best description of a zener diode I have seen!!!! Thanks. Keep the great work.
@DineshKumar-wv1uq
@DineshKumar-wv1uq 2 жыл бұрын
Great explanations. Thanks much!
@BharathKumar-kx4kt
@BharathKumar-kx4kt 3 жыл бұрын
Thanks for the nice explanation, waiting for more videos
@sachingoud6064
@sachingoud6064 5 жыл бұрын
Amazing approach
@GenericPurpleTurtle
@GenericPurpleTurtle 7 жыл бұрын
Terrific video, and thanks for the book recommendation, keep up the good work :)
@tarunvarma3323
@tarunvarma3323 2 жыл бұрын
Great. Please make more
@christopherzhu3161
@christopherzhu3161 3 жыл бұрын
This is great!wish my teacher had taught this way
@ARBB1
@ARBB1 Жыл бұрын
Great work.
@CurtWelch
@CurtWelch 2 жыл бұрын
Fun puzzle! I paused the video and worked on the puzzle. Took me a few hours with multiple false starts, but I got the exact same answer he gave in the end! Also, instead of a 10V zener, you can use a stack of about 14 silicon diodes to perform the same trick by creating a combined 10V forward voltage drop!
@RexxSchneider
@RexxSchneider 2 жыл бұрын
For voltages more than a few diode drops, it's far easier to use an "amplified diode", which is a high-β transistor with a resistor R1 from collector to base and a resistor R2 from base to emitter. The collector-emitter will start to conduct when the voltage across it reaches approximately (1 + R1/R2) * 0.65 volts. For example, to simulate a 10V zener that has to pass up to 15mA, you might use a BC547C with R1=39K and R2=2.7K.
@MegaMino31
@MegaMino31 4 жыл бұрын
Please continue this video series
@rakka1dude184
@rakka1dude184 6 жыл бұрын
the voltage divider is a beautiful trick, nearly understood it then.
@ahmedgaafar5369
@ahmedgaafar5369 4 жыл бұрын
very interesting ...thanks buddy.
@onbeat089
@onbeat089 9 жыл бұрын
Fantastic video. Thanks for sharing. Looking forward to more of these videos hopefully!
@Analogzoo
@Analogzoo 9 жыл бұрын
David H Definitely! I'm planning on doing one of these every week or two.
@efox29
@efox29 9 жыл бұрын
+devttys0 Every week!
@catalin3407
@catalin3407 8 жыл бұрын
Every day ! ... Just joking. Keep doing it when you are able to !
@t1d100
@t1d100 2 жыл бұрын
Thanks! I vote for more tutorials like this! Does anybody have a link to where to download the book?
@bertvanleeuwen6696
@bertvanleeuwen6696 9 жыл бұрын
Fascinating
@nnilson2003
@nnilson2003 5 жыл бұрын
excelente!!!!
@alimovahedi6521
@alimovahedi6521 6 жыл бұрын
Thanks for a good Video. I did try the above circuit by LT Spice the output did sewing from 6.4V to 13.6V rather than 0 to 20V. I did change the 0.1uF by 1uF then the output did sewing from 0 to 20V. Why please?
@Analogzoo
@Analogzoo 6 жыл бұрын
I don't know what frequency your input signal was configured to be in LTSpice, but if changing the coupling capacitor affected the voltage swing, I would suspect it has something to do with the impedance of the capacitor at your selected operating frequency.
@paugasolina5048
@paugasolina5048 2 жыл бұрын
i luh that book cuh
@ivolol
@ivolol Жыл бұрын
Why not use two 5V zeners to roughly equate a 10V one?
@aniketsaha7455
@aniketsaha7455 5 жыл бұрын
Was your 1st circuit wrong???because for an op amp output should be within the supply voltage of op amp(saturation voltage)...otherwise op amp will work as comparator...
@simangundeep8770
@simangundeep8770 3 жыл бұрын
Anyone know, where do I can get that book?
@shawnmicheals1865
@shawnmicheals1865 8 жыл бұрын
gr8 video! pls share some more info on op~amp as converters.
@Analogzoo
@Analogzoo 8 жыл бұрын
+Shawn Micheals I'll add it to the list! :)
@SebastianScholle
@SebastianScholle 3 жыл бұрын
What do you even call this circuit? I was looking for this exact circuit. I have a +-24volt supply available. But my opamp only handles +-18v. And I wanted to invert a - 24volt signal to a +24volt signal. Not sure it can be done... Got any advice?
@fakeapplestore4710
@fakeapplestore4710 4 жыл бұрын
what oscilloscope do you have?
@ravishrestha3885
@ravishrestha3885 2 жыл бұрын
Where can we find copy if this test book?
@Giovanni2862
@Giovanni2862 4 жыл бұрын
Where I can buy this book?
@carrizzle9586
@carrizzle9586 2 жыл бұрын
Did anybody see what voltage he was using for the op amp for the zener diode circuit? Is it +/- 15V or -25 to 0V it wasn't explained.
@doctorbobstone
@doctorbobstone Жыл бұрын
It was a condition of the problem that the opamp use +15 V and -15 V. He also showed it in his first schematic (around 2:03).
@UjjwalKumar-gl3rr
@UjjwalKumar-gl3rr 4 жыл бұрын
💚
@Inquire98
@Inquire98 5 жыл бұрын
"Thank You", thank you very much 😎 How can I get a copy of the book. Let me know. I look forward to hearing from you 😎😐😎
@user-ww2lc1yo9c
@user-ww2lc1yo9c 7 жыл бұрын
I love you
@twobob
@twobob 4 жыл бұрын
Lies, not plenty more :) Great vid
@9935403017
@9935403017 3 жыл бұрын
4:50 what's the role of -25 volts?
@yonatanarieh9770
@yonatanarieh9770 2 жыл бұрын
You need a very negative supply such that current will always be flowing in the direction that will reverse bias the zenner. A -25 V supply is less than the minimum output (-20V) and will make sure that current will always flow in the direction that will reverse bias the zenner even when the output swings to its lowest point.
@AdityaMehendale
@AdityaMehendale 6 жыл бұрын
A BJT/FET is (ironically) a lot cheaper than a 10V zener today :-/
@va7778
@va7778 2 жыл бұрын
1:18 I wanna hear the context of question #21 part d) !!!
@va7778
@va7778 2 жыл бұрын
4:37 the answer makes me even more curious!
@charlieangkor8649
@charlieangkor8649 4 жыл бұрын
there are transistors inside the 741. He said use no transistors.
@charlieangkor8649
@charlieangkor8649 4 жыл бұрын
what if we create random circuits, and then analyze what they do?
@paulperry7091
@paulperry7091 2 жыл бұрын
We can, but they very rarely do anything interesting or useful. I know this, because (by omitting components or accidentally using incorrect valued components) I have created many random circuits over the years! On the other hand, it is possible to evolve a useful circuit by using artificial evolution, combining and testing random assortments until you get the result you want. This method also used in antenna designs.
@bradleyr4451
@bradleyr4451 2 жыл бұрын
2:00 output a larger voltage than the supply voltage? supply is 30v, need to output 20v? output larger -v swing than the -v rail? sure.
@trevorvanbremen4718
@trevorvanbremen4718 3 жыл бұрын
I love the comment around 8:10 ish... "Zener diodes aren't known for being very accurate" I'm guessing nobody told that to Linear Technology when they invented the LTZ1000A with it's temperature controlled buried zener? (Before y'all scream at me... Yes, I _DO_ know that's a VERY special case scenario)
@somedutchguy7582
@somedutchguy7582 3 жыл бұрын
While it is undoubtably the most stable zener commercially available, it is still not very accurate at about +4/-3%
@ivolol
@ivolol Жыл бұрын
Zener diodes in fact are quite accurate, but as they are current-mode devices, you need to provide them a stable set current to get that stability, rather than any particular voltage.
@davidluther3955
@davidluther3955 5 жыл бұрын
I NOT SURE OF WHAT THE OF POINT OF THIS CIRCUIT IS.
@Impedancenetwork
@Impedancenetwork 2 жыл бұрын
Good god ole'mighty throw that piece of shit Klein meter in the trash. And throw that crappy yellow no-name meter away. Man it makes my eyes hurt to look at shitty test equipment.
@marka1986
@marka1986 2 жыл бұрын
They got the job done.
@paulperry7091
@paulperry7091 2 жыл бұрын
Do you pick up the groceries in the lambo? A couple of good, and plenty of "shitty" meters on my bench. Just know which to use, when.
@noslidemais
@noslidemais 2 ай бұрын
@caleb7799
@caleb7799 Жыл бұрын
why smack your lips though...
Jim Williams' Test Your Analog Design IQ #8
27:29
devttys0
Рет қаралды 66 М.
Single Supply Precision Rectifier Design and Optimization
23:10
Looks realistic #tiktok
00:22
Анастасия Тарасова
Рет қаралды 81 МЛН
Always be more smart #shorts
00:32
Jin and Hattie
Рет қаралды 48 МЛН
아이스크림으로 체감되는 요즘 물가
00:16
진영민yeongmin
Рет қаралды 39 МЛН
An Analog Life: Remembering Jim Williams
8:23
Computer History Museum
Рет қаралды 27 М.
Negative resistance and the Negative Impedance Converter
17:14
Memristors for Analog AI Chips
16:25
Asianometry
Рет қаралды 116 М.
Analog Samsung Interview Question Part 1
15:49
Analog Easy-Peasy
Рет қаралды 16 М.
Just How Terrible Is A NEW Portable Radio???
12:20
Fran Blanche
Рет қаралды 396 М.
Pierce Crystal Oscillator Theory and Design
41:11
devttys0
Рет қаралды 141 М.
HWN - Real "Touch Sensing Hardware Engineer" Questions
7:55
Hardware Ninja
Рет қаралды 12 М.
An Analog Life: Remembering Jim Williams
1:18:11
Computer History Museum
Рет қаралды 23 М.
Jim Williams' Test Your Analog Design IQ #17
10:29
devttys0
Рет қаралды 19 М.
Как правильно выключать звук на телефоне?
0:17
Люди.Идеи, общественная организация
Рет қаралды 237 М.
Здесь упор в процессор
18:02
Рома, Просто Рома
Рет қаралды 183 М.