TekPower TP30SWI Power Supply Teardown
Вставка
- Опубліковано 6 жов 2024
- TekPower TP30SWI Power Supply Teardown
A thorough look at the 30A switching power supply from TekPower.
TP30SWi: amzn.to/2vQzMHb
If you are shopping for electronic components, test gear or consumables please consider visiting my Amazon shop @ www.amazon.com....
Please check out www.patreon.com/learnelectronics and pledge a dollar if you can. It will go a long way to keeping the channel alive. It costs a bit of money to buy all the items and produce these videos. You help is appriciated.
Or....if you'd like to send a one-time donation you can use this link: paypal.me/learnelectronics
FAQ:
Me: Paul, 49 from USA
Education: United States Navy, University of California at San Diego B.S. E.E., University of Pittsburgh M.S. E.E.
Experience: United States Navy STS, Bayer Intnl Process Engineer, C.C.A.C AP of EE
Current: Retired
Health: BAD (Congestive Heart Failure)
Hobbies: Electronics, flying, amateur radio, music (classic rock)
Low cost, professional PCB's: www.pcbway.com
Thanks. Man, that bridge rectifier sure is close to the e-cap.
The Vout pot is actually on the little vertical daughter board towards the front. The other pot on the motherboard is unknown.
Very good & thank you for sharing your findings . Just as an observation I would use the Fluke 179 for voltage monitoring as I have found the cheaper Chinese multimeters have proved inaccurate & I just simply gave the meters away .
You have it 8 minutes and broke it already! Sounds like I used to be with mechanical Christmas toys! 😀
The power poles are probably 30A or 45A. 30A is the most common. I like the power poles on the front panel, very handy. Great review.
Thanks for the info
That was a really cool power supply. There was two commercial breaks during your show today did you know
No, I didn't. But I think I know how it happened. I hate that. It won't happen again. Thanks for letting me know.
Looks like longevity is the only question. Nicely built.
Yes indeed, time will tell.
Put a load and a scope on the output so we can see the ripple, please.
I will, video was getting too long. More to come.
learnelectronics
Cool beans sir, thank you.
You should also look at voltage overshoot in various combinations of enabling/disabling the outputs and/or turning on/off the supply. A lot of cheap bench supplies will send out a pretty significant little voltage spike. I had a cheapo supply kill a couple STM32s because it would put out a ~10V pulse regardless of what the output set voltage was when you turned it off, but only if the output had been turned on and then back off... Good thing those boards were only a couple dollars each! This isn't exactly the same kind of supply but I'd still check it to be safe.
nobodybodybody have you looked into adding a nice big capacitor, inductor and bleed resistor (RC/LC filter) to keep that voltage spike from hitting your parts. I know I am looking into some heavy mods to clean up the output of my cheap SMPS.
It looks like a nice power supply. I hope the bands improve soon and you make some cool contacts. 👍
Thanks. Im on the 40m NATA net every night. But they all seem to be east of the Mississippi. I did make 20m contact in Colororado last week but he faded. So yeah, bands are in the toilet. Next Saturday is the Ohio QSO party. Hopefully we will have a good day.
I think you are not getting my reply to your question about which capacitor failed. The board says it is C8 and it is next to the two big electrolytics. Thank you!
Ok c8. I'll see what I can find
Very nice review! Thanks!
Nice video. I would have liked to have seen a little more detail on the insides. For example, you pointed out the transformer (I think there are 2 inside). Are these audio transformers? Could you discuss their role a little? Thanks! And as always, I love your videos!
You mean to tell me your $500 radio doesn't even come with it's own power supply? ;-) This thing looks really nice. Tekpower makes some good stuff for the price point, my bench supply is the same brand and I've had no complaints in the 2 years I've had it. Keep on tearing stuff apart it's fun to watch and you might even learn some electronics too. Good vid keep em coming!
Thanks George. No ham radios dont come with power supplies.
Hello. What is the function of that blue potentiometer, down on the main board? 8:35
That load certainly looks like it Banged-Good.
Ordered a MOSFET yet?
Excellent video about a good power supply. However, I had an over voltage situation that blew out a small capacitor next to the big electrolytic. Do you have a schematic or can tell me what value it is so I can replace it. This capacitor also has a rubber sleeve. Thanks, Mike
Do you know which number ie c1 c2 etc?
I'm guessing the 13.8v is for a mobile radio using a 12v system? It definitely looks like a nice supply. I wonder now that I think about it what are the pros/cons of running a radio at 30A without an amplifier versus running the radio at 10A and using a 20A amplifier to get the out put you want? I realize cost would be a huge one just cause of RF voodoo stuff, but is there other drawbacks?
Great video Paul thanks for all you do.
Yes its made for mobile radio.
A higher power power supply will not effect the output of the radio at all. You're mixing amps with watts. A radio will draw a certain amount of power depending on what you have it set to. For example, my IC7300 draws 25 Amps at its full 100w out. If you were to use a 10A power supply, it would all shut down because it cant get enough power. If you were to use a 100A power supply, it would perform no differently than a 30A power supply.
Is the fan spinning all the time? I got this and the fan is doing nothing. I have an equivalent Jetstream that has the fan on all the time. Wonder if they updated the design when the fan runs only when needed. Thanks you
Good stuff. I'm just wondering if this power supply has output protection in case of a short. I know another youtuber (KB9RLW) made a video about a similar ham radio power supply which was damaged due to excessive current draw.
I just recieved one and dont understand why the fan doesnt come on when u turn the unit on. Is it thermostat controled. I used it about 30 min. And the fan never engaged. Help,
hi, I'm an italian ham and i have the RPS1230 SWM model, which is identical to yours.
I would like to know between the 2 trimmers inside, what is needed to adjust the external voltage. Instead, what is the use of the trimmer on the vertical additional board where the two wires connected to the external potentiometer that regulates the NOISE OFFSET are soldered?
There is the PS30SWIV model (in your case it would be the TP30SWIV model which is identical in components, only that it has a digital display and an external potentiometer for external voltage regulation (the manufacturer is the Chinese QJE then the importers call it RPS1230SWM the Telecom -Falcos in Spain, 832NFA the Italian Proxel, PS30SWI the Russian VIVA-Telecom and in your country it's called TP30SWI).
I would like to know what value the potentiometer must have and where to connect it (in the photo of the PS30SWIV I saw that the 2 wires that connect the external potentiometer of the voltage regulation are under the main board from the soldering side, however in the photo it is not seen where they are welded (believe the heads of the 500 ohm VR1 trimmer).
Could you help me? I need external regulation. Thank you very much
I am surprised that you didn't hook this up to an oscilloscope and look at the noise...
Can't put it all in one video. It was getting too long. More to come.
How would you recommend attaching a ground strap to the case? Is there a specific spot for that?
The proof is in the pudding. Hook it up to the HF on 160, 80 or 40, 20 and up aren't the issue most of the time. Tune the whole band. Find you SMPS freq. If you don't get interference, then it's okay for radios.
I ran it last night on 40, and 20, no problems.
I have a radio shack smps that is supposed to be made for running radios. It has a 100khz switch freq. So I get lots of noise on 7, 7.1, 7.2, 7.3, 3.5, 3.6, 3.7, etc. Quite noiesy. Usually about an S7. I know how to fix it but just don't seem to find the time. Glad yours works for you.
Ordered one for my Xiegu XG90.
What do you think of that radio? I just ordered one.
@@learnelectronics I saw another guy testing it then decided to order one from MFJ. It was on back order, but now on the way to me. It seems to be very nice and firmware updates being done too. Will post a video of both, radio and Power Supply. It seems to me as per the manufacturer, the front output of the power supplies are 3 amps, but 30 on the back. Just read from them.
Cool thanks!
You were doing great and then you made the ridiculous comment about running 30-year-old power supplies which places you firmly in the appliance operator category...
That 30-year-old astron linear power supply will run circles around your cheap Chinese switcher.. And the astron doesn't need a noise offset because it doesn't generate any noise.
there's only one benefit to a switching power supply and that is that they are light but when it comes to performance a switcher can't even remotely touch a good linear supply.
Boo hoo
DID NOT EXPLAIN WHAT THE NOISE FILTER DIAL WAS FOR !!! WHAT THE HELL!!!!!!
Yeah he did, at 8:50. The noise filter adjust changes the switching frequency of the power supply. This is useful when powering an HF receiver with this power supply - due to the nature of a switching power supply (and fast-rise-time physics) there are bound to be "birdies", or unwanted signals, that might appear right where you happen to want to listen. The control moves the switcher frequency, which also moves the birdies away from the frequency of interest. Hope that explanation helps. Cheers, N5MJ