Instrument Basics: Bench Power Supplies - Workbench Wednesdays

UNI-T UTP3305-II DC Power Supply finally can afford this dual thingie

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.

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.

Frequency generator

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.

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 )

Possible price for a 60 volt 10 amp power

hello how are you

Excelente

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 :)

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 thanks

what happens when a +ve and -ve wire from bench power supply touch each other accidently at 6V?

What's the chances of one of these killing me inadvertently because electricity is confusing?

short and concise, perfect! thank you

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.

that is useful,and you did a great job to bring it alive :)

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).

Seems like a well presented, informative video, but still over my head. I'll have to come back and rewatch later.

You're awesome for us beginners looking at power supplies

I have a 12v 3.6a device and I lost the wall wart, is it a problem if I hook it up to a 12v line that is of a higher DC amp output?
I don't have a current adjustment on the power supply I have just voltage.

Excellent tips and tricks. In the process of setting up a tinkering/ serious work station at home. Thanks for your review

I wish the camera was on the products and not the presenter!

de cual shampoo usas carnal?

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?

🇳🇱🤪🤪🤪🤪🤪👍👍👍👍. power supply is it switched power supply. or a linear one

Very good collection of knowledge. Thanks a lot.

An you hold the camera on the devices more than you?

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

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.

In the bench power supply, can I do a jump connection between with GND and Negative output? It's a good idea?

Thanks a lot four your great explanations .

Oscilloscope

3 output power supply, are the ground of each channel built-in connected together?

Do some Power supplies allow you to adjust the current limit without needing to short out the leads?

Zasilacz laboratoryjny UNI-T UTP3305 2x 0-32V 0-5A

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.

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)

It's better to spark outside not in relay contacts inside. Also you can avoid sparks by setting low output voltage first.

Please how the devices are purchased

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.

Nice

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.

Great video. A video on basic oscilloscopes would be great.

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?!"

Thanks for this. New to the hobby, helped immensely

Would watch again :) How about the ever popular UNI-T clamp meter. Seems to be a follow up purchase to a psu.