Understanding Bench Power Supplies and Dr Meter PS-3010DF Review

Good video

great guidance. the device you showed sure leaves much to be desired.

Mine broke down a few times, I got the fan spinning on and off, finally out of the blue it works again...I got another one which is smaller but its 3 digit and im lost with the settings now lol

Appreciate you taking the time to answer some questions about Power Supplies for those of us researching alternatives before purchasing. Interesting showing the ground to both grounding rod and the case of the actual power supply. As result watching you video I am making a “ Checklist “ to set dials for both V & A to zero before turning Off ! ! I just ordered a power supply earlier today from Amazon with 2 day delivery. Your video has been helpful.
I probably watch it again after I get my new power supply.

Dear Sir,
You video is very helpful. Please help me. I have to purchase a used 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.

I'm a retired mechanic and do small electronics projects all the way to shop repairing equipment,
If you haven't bought a bench top power supply you don't know what you're missing, after you own one you will wonder how you lived without it, and you will wish you had discovered one years ago 🤓🤓🤓🤓🤓🤓

Life saver video. For the touch-pad version of the Dr. Meter, the absolute knobs position corresponds to the LED numbers PRIOR to pressing the orange [Output] button.

Appreciate the work. Thanks

Hello. 3 years have passed. how did this power supply perform? could you recommend it? Thank you.

Thanks...great insights! I am an old guy who has never worked with anything but voltage-only controlled power supplies (back in the day). I was more than a little befuddled by all of this. And they want me to WHAT? Short my output? Dangerous madness! Now I get it although still a little uncomfortable. But it is good to feel uncomfortable when you are not absolutely on top of what you are doing with electricity. Feeling uncomfortable means THINK and go SLOW and BE CAREFUL. A little speed will come as I settle in with this.

Not sure if that applies to all DC Power units but...
I set it by first setting every knob to off, then setting V to the value I want t o use in my circuit, then I short circuit + and - and set A to the value I calculated my circuit will max out at.
Then the current is set to a safety value (at least for my unit)

Thank you for being awesome.

Very instructions and clear thanks 👍👍👍

Thank you, i had no output, the CC light was on and that meant nothing until you clarifed all this for me. Well done.

I in all my 35 years of being an electronics technician have never linked earth ground (Chassis Ground) to power supply ground. Doing so can damage test equipment. I always have my power supplies floating which creates isolation from other test equipment.

I bought one of these for my off grid power shed. Actually, I didn't know I had bought it till I checked my email. Amazon is tricky! At 30V this is really operating on the edge. With my MSW inverter it will only get up to 25V. It can also run on 140V DC in the 220V switch position as it uses a voltage doubler on the input. I should have bought the 5A version as often these will work at lower voltages, or they can be modified to. I really wanted to avoid having to use an inverter with it. The test leads have those spiral fingers and have found so many of those banana plugs can have a lot of resistance as they age. I've had to file and solder many of them to prevent voltage loss. A decent supply for a beginner, it just doesn't suit my purposes for a low power supply.

thanks for sharing

Is it worth buying or is there a better one for the same price point...also didn't talk about noise with a scope.. I want to buy one to test car sensors. What do u think

Got one to charge batteries. Following the directions, it doesn’t stop charging up to the set voltage. Not sure if it’s broken or if im missing something …

Thanks, helped a lot, didn’t know how to use CC mode.

I bought the same supply and it came with no user manual. Thanks much for details.

I hate my psu even more now

I've got the same supply, different brand. Surprise. I hate the sloppy interface. I bought it when I didn't know anything. I don't know much more haha

Thank you very informative could you fit a on/off switch directly into the +ve 4mm slot then you have isolation from your circuit, just a thought Peter. Many thanks.

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

I have that exact meter. And I can't tell you how many times I told it to shut up as well.

Great video ty

Stumped! I'm trying to top balance some new LiFePO4 cells using its constant voltage mode. Directions tell me to turn the amp knobs clockwise all the way, then set it to my desired voltage (3.65v in my case), then connect the battery to the terminals. As soon as i do that, it reverts to the constant current mode. Any idea how to keep this in constant current mode?? Any help would be much appreciated. thanks for the video!

Thank you, I bought this PSU a few months ago for a project not yet started. I appreciate the time you took on this tutorial I’m happy with my choice after seeing this. Although it is a budget “No bells and whistles” supply it will do what I need it for. I just wish I’d looked into it further as I feel sure I will outgrow the features of this particular product.

I find the voltage wanders over time, ended up overcharging my LiFePO4 cells :(

So just to clarify, are those dials "Absolute" or..?

I bought one of these to test my sailboat wc pump engine (24v / 6amps), and of course, there is no way I can set up my 30v/10 DC supply to reach the mentioned required current. How can I do it? Thanks in advance.

Thank you for this. I'm still going to have "an adult in the room" for my maiden voyage making colloidal silver with the power supply rather then batteries, but at least my electrician brother in law won't look at me like a total dunce on Wednesday. I can't beleive my grade 10 self didn't think these lessons were worth staying awake for in school... oh well, it's fun to learn with a purpose. :)

Fantastic. This power supply will be delivered even tomorrow and now I know full well how to use it to charge my 32 headways. Thankyou sir

Looks identical to the Kaiweets 30 volt 10 amp. Are they the same manufacturer by chance?

I'm left with more questions

Cc seems more a current limit . Because doesn't constant current force the Amps through. Like I'd amps is set at 1amp.. 1 amp will be forced through what ever it powering

Is there a way to preset Amps before plugging a device in? We can preset Volts but only see Amp display when device is connect.

Good explanation of the ground terminal function. By the way, you swapped the black and green terminal covers when you put them back on.

Hey, I need a negative voltage to power some dual rail op amps. What is the cheapest power supply I can buy to achieve this? I am at home and do not have access to the campus labs. Will someone please help me out..

My biggest problem with mine is that I don’t fully understand amps/volts. Lol, my own ignorance. Like, why does it automatically change between constant current and constant voltage and why can’t I set it to one or the other. Yesterday I was in a bind because my truck battery was dead. I ran the power supply at 14V the amps started out at 10ish and dropped down to around 7. After about 7-10 minutes, there was enough charge in battery to start the truck. I don’t know how dangerous (or not) this may have been, but that’s why I am here now.

i ordered a similar model, i cant wait to start learning from it.

Thanks, I just bought a new power supply with Chinese instructions. It’s not the same brand but it is very similar in operation. Your video was a clear, thorough and helpful introduction.

change out the pots at the front with Multiturn Pots but what vallue are they ?

Has anyone worked out how to fix the display voltage lag on these? I'm thinking it might just be a RC circuit that needs tweaking...

Nice multimeter!

Very helpful, thanks for sharing 👍