Yes as people are saying, a really useful presentation ! Things are much more sophisticated than when I was a teenager doing electronics in the 1960s, so it is good to catch up on the latest technology ! Thank you !
Thanks for this great video. The whole current-limiting thing is the biggest hurdle my brain had to jump over when learning how to use my power supply. I kept reading online to short the leads together, yet my brain kept thinking "WAIT A MINUTE, WHAT?!"
Explained a power supply really well, and inspired me to organize my things better? Subscribed. Looking forward to learning more from you, and thank you for sharing your knowledge.
Thank you for this great video. You are a great teacher and I love how you question pertinent information and answer it. I learnt a lot about how to safely set the current limit and about bench power supplies.
The bench power supplies I work with nowadays display the voltage and current settings when the knob is turned, then go back to displaying the actual values. I haven't come across one that required shorting the output to set the current limit for many years.
Qs from amateur with 220-240 EU power: Can these Power Supplies be used for NVR(s) with security cameras pls? The power here does not have even Electronic Voltage. Is this used for computer power, security camera systems. Any excellent, reliable ones out there please? Looking forward to some answers. Thanks in advance.
Two power supplies were hooked together in -/0/+ configuration. Now "ground" on first PSU is now set below the actual ground voltage. How do I force it to set back to 0?
You basically need to increase the current limit. Let say your circuit needs 1A at 12V, you need to set your current limit above 1A (something like 1.1A and 1.2A).
Great video, but i’m confused about choosing the right supply for power a split power rail circuit, for example plus and minus 12v….. does the small Tenma on the right support this? Or do you need a dual channel supply for this, like the larger one on the left? (The viewers left that is :)
dual channel: Minus on channel one for -12v. Plus on channel one connected to minus on channel two and this is 0v. Plus on channel two is +12v. Or if you do not need a 0v reference, you can just set one channel to 24v and pretend it is +- 12v.
I enjoy all of your videos. These basics ones are very good because I am trying to learn. I would say to be sure to go over all the equipment. I especially would like oscilloscope instruction and how to properly connect up the leads. You may have already done one of these videos.
Dear Sir, I have to purchase a DC Power Supply. I have two options, 1. Topward 6303D 2. Caltron PR 3303SE I have downloaded the operating manual of S. No. 1 but couldn't find that of S. No. 2. I need durable, high quality and easily repairable out of these two options. Price is not an issue. I will be highly obliged if you guide me to choose the right one. Thank You.
What are some good brands to buy? I don't want to get the Chinese made junk on ebay but I've seen some nice BK, Rigol, and mayb Extech. I can now add Tenma to my search. Any others you recommend? I'd rather buy a good brand used one than a off brand new one.
You forgot to mention, and I think this is very important, that when you turn the voltage knob left, this decreases voltage. When you turn to the right, it does the opposite, it increases the voltage. The technical tern for 'left' is 'anticlockwise' ('anti' means the opposite of the way hands on a clock move) and the technical term for 'right' is 'clockwise' (the way hands normally move on a clock).
Hello, I have a UNI-T UTP3305-II laboratory power source, is it possible to take a symmetrical voltage (+ (0) -) from this source when the outputs are connected in series to power the operational amplifiers? Thank you very much for the advice, maybe it would like to include a short video. There are a lot of examples of how multi-channel sources work on TH-cam, but no one has explained such a connection. Thank you very much.
The question is confusing. If you put the two channels in series, then you only have one + and - connection. Which, if the op amp can handle the voltage, then yes you can power your op amp circuit. But that seems too obvious and I must be missing something.
@@bald_engineer th-cam.com/video/SHMwtO4QZcA/w-d-xo.html Perhaps something similar is done by a triple power supply when two outputs are connected in series.
Maybe I'm making it too complicated!!! Maybe instead of connecting the double source in series on the lab power supply, just leave both sides of A+B separate and just connect A- and B+ and that way we get the center of a symmetrical source. It would probably be good to connect the center A-B+ to ground. I'll try it. The instructions are probably here: th-cam.com/video/w99Q23mUEZg/w-d-xo.html I am concerned with how to create a symmetrical supply voltage suitable for operational amplifiers on a triple laboratory source.
it's funny how such a simple video like this can get so many likes.. All this information is in the user manual. so simple to understand.. my wife, who has no background in electronics, read it to me and explained to me how I should " adjust the current output ", even though she didn't even know what she was talking about.. for the record.. the manual was in english and this is not her first language or native language ( neither is mine )
Much easier to use a proper digital power supply which can set the output current limit without shorting anything and without turn de output on. This method in the videos is only used in crappy chinese power supplies ( tenma only rebrands those, of course, does not really manufacture anything )
Perhaps it would be good to show how a multi-channel laboratory power supply can be connected as a balanced supply (+12V) : 0 ground : (-12V). Connecting two channels in series does not seem to create a zero point for the positive and negative voltages. I believe that this is possible by connecting (A-) and (B+) separate channels and thus creating a zero potential for both the positive and negative voltage branches. It is good to connect the zero contact to ground (in both channels of the source). It would be good to have a short video on how to connect it and how it works. There are several videos on TH-cam about wiring two separate sources as symmetrical. I think that both separate channels of one source should work exactly the same.
If the channels of the power supply are isolated or floating then it is very easy. You do not use the Power Supply's series function in that case. You just connect the negative from one to the positive terminal of the other. The terminal in between is effectively 0 volts. The free + terminal is the positive supply, the free - terminal is the negative supply. To verify if a supply is floating use a DMM's continuity mode to check if there is a short between the negative terminals. Search this channel for "How Advanced Power Supply Functions Work" to see an example of this connection.
I agree and thank you very much. I kind of thought it might work. Because a series connection just doubles the voltage without a real center (0) at some output.
Planert X3(Hidden easter-egg in this video?) :D i have not tested it since i think it migth short hehe , but if i use normal/standar pc psu what happens if i connect 2 +12v togetter? or will it only short if i connect 1 of +12v to 0v, pc psu is sort of Poor-Man`s Bench Power Supplie but locked thoe :) Awesome Video :)
What in ohm's name :D :D But plz get a black band 4 ur watch, keep thinking my girlfriend is showing me. *(thank u 4 a great video, this is almost perfect, informative & entertaining)
pfft.. putting a dual-channel into parallel or series ..c'mon pretty straight forward when it is even button-orientated for boith current and voktage and clearly written in the manual.. you should have used two single-channel that are not adjusted from scratch to this feature and where you need to do it au naturel. but whatever waste of time.. -1 unsubscribe. onto another video that perhaps knows what they are talking about where they actually can do it on two bench PSU not already adjusted from the factory to do this. It is on single channels PSUs with all this reference or reverses bias and all that jazz hence parallel and series, where it would be relevant to get the info out there so people don't blow things up and risk harming themself, not least when dealing with mains power that is 230v in my region. as the aspect of pushing a button on a multichannel PSU were it already built-in with dedicated buttons and even texted clearly in the manual, are not really learn or topic-worthy. but whatever I should not need to burp common sense of you you channel-holder, the above scenario should be obvious for what is relevant when the average joe wanna put bench PSU into series or in parallel when on mains voltage.
Video not useful. Need more demonstrations and less talking head. There is no good bench power supply tutorial anywhere on YT. What about constant voltage vs constant current?
Great video. A video on basic oscilloscopes would be great.
Yes as people are saying, a really useful presentation ! Things are much more sophisticated than when I was a teenager doing electronics in the 1960s, so it is good to catch up on the latest technology ! Thank you !
Thanks for this great video. The whole current-limiting thing is the biggest hurdle my brain had to jump over when learning how to use my power supply. I kept reading online to short the leads together, yet my brain kept thinking "WAIT A MINUTE, WHAT?!"
Explained a power supply really well, and inspired me to organize my things better? Subscribed. Looking forward to learning more from you, and thank you for sharing your knowledge.
The best explanation on this device thanks man
Glad you liked it!
Thank you for this great video. You are a great teacher and I love how you question pertinent information and answer it. I learnt a lot about how to safely set the current limit and about bench power supplies.
Thanks for this. New to the hobby, helped immensely
The bench power supplies I work with nowadays display the voltage and current settings when the knob is turned, then go back to displaying the actual values. I haven't come across one that required shorting the output to set the current limit for many years.
Qs from amateur with 220-240 EU power: Can these Power Supplies be used for NVR(s) with security cameras pls? The power here does not have even Electronic Voltage. Is this used for computer power, security camera systems. Any excellent, reliable ones out there please? Looking forward to some answers. Thanks in advance.
3 output power supply, are the ground of each channel built-in connected together?
Very informative. Can you use the same principle on ATX power supplies?
I want to build my on bench supply. I want to 39V with at least 200W.
Two power supplies were hooked together in -/0/+ configuration. Now "ground" on first PSU is now set below the actual ground voltage. How do I force it to set back to 0?
At 3:51. If I wanted 12 volts to always be there how would I do that? CV.
You basically need to increase the current limit.
Let say your circuit needs 1A at 12V, you need to set your current limit above 1A (something like 1.1A and 1.2A).
Great video, but i’m confused about choosing the right supply for power a split power rail circuit, for example plus and minus 12v….. does the small Tenma on the right support this? Or do you need a dual channel supply for this, like the larger one on the left? (The viewers left that is :)
dual channel:
Minus on channel one for -12v.
Plus on channel one connected to minus on channel two and this is 0v.
Plus on channel two is +12v.
Or if you do not need a 0v reference, you can just set one channel to 24v and pretend it is +- 12v.
@@BaldurNorddahl thanks Baldur
Excellent - thanks very much for making this - it seems a simple topic but it is good to understand all the things one's PSU can usefully do.
@element14_present Hey I have a question, would a bench power supply help with a video transfer device?
You're awesome for us beginners looking at power supplies
Dude. I literally started writing a comment when you shorted the PSU at 1,4A with such thin cables xd
Excellent tips and tricks. In the process of setting up a tinkering/ serious work station at home. Thanks for your review
Hey what power supply did you end up buying if I may ask? :)
In the bench power supply, can I do a jump connection between with GND and Negative output? It's a good idea?
I enjoy all of your videos. These basics ones are very good because I am trying to learn. I would say to be sure to go over all the equipment. I especially would like oscilloscope instruction and how to properly connect up the leads. You may have already done one of these videos.
Dear Sir,
I have to purchase a DC Power Supply. I have two options,
1. Topward 6303D
2. Caltron PR 3303SE
I have downloaded the operating manual of S. No. 1 but couldn't find that of S. No. 2. I need durable, high quality and easily repairable out of these two options. Price is not an issue.
I will be highly obliged if you guide me to choose the right one.
Thank You.
short and concise, perfect! thank you
Very good collection of knowledge. Thanks a lot.
what happens when a +ve and -ve wire from bench power supply touch each other accidently at 6V?
Would watch again :) How about the ever popular UNI-T clamp meter. Seems to be a follow up purchase to a psu.
Is there a place I can learn about PSU safety? I want to learn electronics and bought a PSU but I can’t find a reliable source for PSU’s
Do some Power supplies allow you to adjust the current limit without needing to short out the leads?
What are some good brands to buy? I don't want to get the Chinese made junk on ebay but I've seen some nice BK, Rigol, and mayb Extech. I can now add Tenma to my search. Any others you recommend? I'd rather buy a good brand used one than a off brand new one.
Possible price for a 60 volt 10 amp power
Scope that can measure normal scope things as well as rf gen
Love this demo , will certainly help my students .
You forgot to mention, and I think this is very important, that when you turn the voltage knob left, this decreases voltage. When you turn to the right, it does the opposite, it increases the voltage. The technical tern for 'left' is 'anticlockwise' ('anti' means the opposite of the way hands on a clock move) and the technical term for 'right' is 'clockwise' (the way hands normally move on a clock).
Thank you for the information..
that is useful,and you did a great job to bring it alive :)
An you hold the camera on the devices more than you?
Love your videos! How about using you electronic load to chart the life of a battery. Thanks again!!!
Thanks a lot four your great explanations .
Great video thanks
Excelente
Seems like a well presented, informative video, but still over my head. I'll have to come back and rewatch later.
MAYBE PRESENTATION ON FUNCTION GENERATORS MIGHT BE HELPFUL.
Hello, I have a UNI-T UTP3305-II laboratory power source, is it possible to take a symmetrical voltage (+ (0) -) from this source when the outputs are connected in series to power the operational amplifiers? Thank you very much for the advice, maybe it would like to include a short video. There are a lot of examples of how multi-channel sources work on TH-cam, but no one has explained such a connection. Thank you very much.
The question is confusing. If you put the two channels in series, then you only have one + and - connection. Which, if the op amp can handle the voltage, then yes you can power your op amp circuit. But that seems too obvious and I must be missing something.
@@bald_engineer th-cam.com/video/SHMwtO4QZcA/w-d-xo.html
Perhaps something similar is done by a triple power supply when two outputs are connected in series.
Maybe I'm making it too complicated!!! Maybe instead of connecting the double source in series on the lab power supply, just leave both sides of A+B separate and just connect A- and B+ and that way we get the center of a symmetrical source. It would probably be good to connect the center A-B+ to ground. I'll try it. The instructions are probably here: th-cam.com/video/w99Q23mUEZg/w-d-xo.html
I am concerned with how to create a symmetrical supply voltage suitable for operational amplifiers on a triple laboratory source.
it's funny how such a simple video like this can get so many likes.. All this information is in the user manual. so simple to understand.. my wife, who has no background in electronics, read it to me and explained to me how I should " adjust the current output ", even though she didn't even know what she was talking about.. for the record.. the manual was in english and this is not her first language or native language ( neither is mine )
Please how the devices are purchased
Nice
Much easier to use a proper digital power supply which can set the output current limit without shorting anything and without turn de output on. This method in the videos is only used in crappy chinese power supplies ( tenma only rebrands those, of course, does not really manufacture anything )
BEST CLIP EVER.THANKS MAN.😊
Nice, thank you, I need one of these!
de cual shampoo usas carnal?
What's the chances of one of these killing me inadvertently because electricity is confusing?
Stops and sniffs... bit of an off smell coming from that badger sett... I wonder if he zapped himself a year ago!
@@annpeerkat2020 NOPE! I Survived.
@@HyperionBadger That's great news for the badger species!
@@annpeerkat2020 hahaha thank you for thinking of us 🦡🦡🦡
Perhaps it would be good to show how a multi-channel laboratory power supply can be connected as a balanced supply (+12V) : 0 ground : (-12V). Connecting two channels in series does not seem to create a zero point for the positive and negative voltages. I believe that this is possible by connecting (A-) and (B+) separate channels and thus creating a zero potential for both the positive and negative voltage branches. It is good to connect the zero contact to ground (in both channels of the source).
It would be good to have a short video on how to connect it and how it works. There are several videos on TH-cam about wiring two separate sources as symmetrical. I think that both separate channels of one source should work exactly the same.
If the channels of the power supply are isolated or floating then it is very easy. You do not use the Power Supply's series function in that case. You just connect the negative from one to the positive terminal of the other. The terminal in between is effectively 0 volts. The free + terminal is the positive supply, the free - terminal is the negative supply.
To verify if a supply is floating use a DMM's continuity mode to check if there is a short between the negative terminals.
Search this channel for "How Advanced Power Supply Functions Work" to see an example of this connection.
I agree and thank you very much. I kind of thought it might work. Because a series connection just doubles the voltage without a real center (0) at some output.
Oscilloscope
Planert X3(Hidden easter-egg in this video?) :D i have not tested it since i think it migth short hehe , but if i use normal/standar pc psu what happens if i connect 2 +12v togetter? or will it only short if i connect 1 of +12v to 0v, pc psu is sort of Poor-Man`s Bench Power Supplie but locked thoe :) Awesome Video :)
hello how are you
UNI-T UTP3305-II DC Power Supply finally can afford this dual thingie
🇳🇱🤪🤪🤪🤪🤪👍👍👍👍. power supply is it switched power supply. or a linear one
Zasilacz laboratoryjny UNI-T UTP3305 2x 0-32V 0-5A
I'm a beginner and u confused me dude but thanks for trying to explain ❤
I wish the camera was on the products and not the presenter!
What in ohm's name :D :D
But plz get a black band 4 ur watch, keep thinking my girlfriend is showing me.
*(thank u 4 a great video, this is almost perfect, informative & entertaining)
pfft.. putting a dual-channel into parallel or series ..c'mon pretty straight forward when it is even button-orientated for boith current and voktage and clearly written in the manual..
you should have used two single-channel that are not adjusted from scratch to this feature and where you need to do it au naturel.
but whatever waste of time.. -1 unsubscribe. onto another video that perhaps knows what they are talking about where they actually can do it on two bench PSU not already adjusted from the factory to do this.
It is on single channels PSUs with all this reference or reverses bias and all that jazz hence parallel and series, where it would be relevant to get the info out there so people don't blow things up and risk harming themself, not least when dealing with mains power that is 230v in my region.
as the aspect of pushing a button on a multichannel PSU were it already built-in with dedicated buttons and even texted clearly in the manual, are not really learn or topic-worthy.
but whatever I should not need to burp common sense of you you channel-holder, the above scenario should be obvious for what is relevant when the average joe wanna put bench PSU into series or in parallel when on mains voltage.
Do you know where I can learn about PSU safety? I bought one recently and I am unsure how to be safe when using it
Interesting video, but acting isn't this guy's strong suit. It's like bad am-dram. He'd be better just talking.
Video not useful. Need more demonstrations and less talking head. There is no good bench power supply tutorial anywhere on YT. What about constant voltage vs constant current?
First!
first reply
@@ManofCulture 👍🍻
4th
@@MindYourBusiness1970 👍🍻