EEVblog #225 - Lab Power Supply Design Part 4 - PWM Control
Loading...
Uploaded by EEVblog on Dec 2, 2011
The 4th installment in the lab power supply design series. This time Dave shows you how to control the supply with a Pulse Width Modulation (PWM) signal, and chose the correct filter values.
- 202 likes, 3 dislikes
-
Uploader Comments (EEVblog)
Top Comments
-
Wow, even though you are updating these so often, it is so hard to wait for the next one. I am learning a ton from you. Thanks.
2 months ago 20
-
:) 30:55
2 months ago 11
All Comments (74)
-
Dave, I have seen many of your tutorials/reviews . They have been really good. This PWM stuff however, blew my mind away! This was seriously impressive :O
I am going to build this PWM set up and test it out. Any recommendations on the op amp?
-
Love it!! you are awesome!!
-
nice set of videos! what would you recommend using to power your power supply? ;)
-
Finally had a chance to catch up on the power supply vids! Keep up the good work, love learning from them!
-
Shouldn't the resolution be Vref / ((2^n)-1)?
-
Can't wait for the rest! :D
- 12 videosPower Supply Design
- 44:48
EEVblog #224 - Lab Power Supply Design - Part 3by EEVblog13,841 views
- 51:30
EEVblog #232 - Lab Power Supply Design Part 5by EEVblog13,284 views
- 17:42
EEVblog #233 - Lab Power Supply Design Part 6 - LT3080 Testingby EEVblog9,557 views
- 37:41
EEVblog #221 - Lab Power Supply Design - Part 1by EEVblog24,022 views
- 9:18
The Most IMPORTANT Video You'll Ever See (part 1 of 8)by wonderingmind424,027,873 views
- 5:03
Is This a Power Supply or a Joke?by uxwbill4,372 views
- 10:05
How To Make Your Own Bench Top Supply From a'n ATX PC Power Supply! (So Simple Anyone Can Do It!by rwg4298518,040 views
- 3:20
Professional SMT Soldering: Hand Soldering Techniques - Surface Mountby jkgamm041207,446 views
- 5:11
Michio Kaku: What If Einstein Is Wrong?by bigthink103,979 views
- 2:30
Soft Starters vs. Drivesby electricengineering12,374 views
- 6:21
PIC12F675 32 LED PWM CONTROLLER WITH 74HC595, PIC16F84A AS SEQUENCE LED AND MULTISPEED KNIGHT RIDERby fastware200721,249 views
- 10:36
Experiments 1.2: Introductory Power Supply Circuit II (Mains PSUs)by DerekMolloyDCU6,011 views
- 14:58
Converting Computer ATX Power Supply to Lab Bench Power Supplyby JumperOneTV76,003 views
- 25:41
EEVblog #174 - Renesas RX Design Contest Winnersby EEVblog8,520 views
- 10:14
Simple Linear Adjustable Power Supply Tutorial (Based Around LM317) Part 2/2by JumperOneTV9,924 views
- 39:56
EEVblog #186 - Soldering Tutorial Part 3 - Surface Mountby EEVblog40,948 views
- 4:35
12V to 48V DC-DC Converterby resaebiunne52,552 views
- 0:47
ECE 469: Power Electronics Labby ECEILLINOIS3,062 views
- 27:09
EEVblog #168 - How To Set Up An Electronics Labby EEVblog44,196 views
- 53:57
EEVblog #91 - $50 Multimeter Shootout - Extech EX330, Amprobe AM220, Elenco, Vichy VC99, GS Pro-50by EEVblog38,041 views
Playing along at home. Using a TL072 and a N-MOSFET, I made up a linear regulator in place of the LT3080. Then I did a little bit of math. Since the whole system is a series circuit, the regulator is a resistor to drop the voltage. Also since it's a series circuit, the current is the same everywhere. I set the supply for 1v, and used a 1 ohm load. Using a 30v supply, I needed to drop 29v at 1A. So I was wasting 29W of heat to supply 1W to the load..! That's about 3.5% efficient..!
Microman171 2 months ago
@Microman171 Yes, that's how all linear PSU work.
EEVblog 2 months ago
do you have any photos or schematics of this on your websites
quicknuclearscience 2 months ago
@quicknuclearscience Not yet, coming soon...
EEVblog 2 months ago