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Wavecom PS-3005D 30V 5A Bench Power Supply $129 Delivered @ Wavecom Instruments via Amazon AU

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Wavecom PS-3005D 30V 5A Bench Power Supply $129 Delivered @ Wavecom Instruments via Amazon AUAffiliate
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nuker on 05/07/2021 - 20:47 amazon.com.au (855 clicks)
Last edited 08/07/2021 - 00:14 by 1 other user
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Always wanted to have one, guys at eevblog.com seem to approve this one.
https://www.eevblog.com/forum/buysellwanted/wanted-bench-pow…

Edit: This is Linear PSU, has big ass transformer inside. Many cheapos on Amazon (like Yescom) are likely switching ones, noisy output.

  • Digital Benchtop Power Supply
  • 30 Volt, 5 Amp capacity
  • 10mV/1mA Resolution
  • Over-Current and Over-Voltage Protection
  • 12 Month Warranty
Price History at C CamelCamelCamel.
Electrical & Electronics Bench Power Supply Wavecom Instruments

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closed Comments

  • Joz on 05/07/2021 - 20:51
    +1

    What would you use it for? Seems like a special object!

    Description
    The Wavecom PS-3005D regulated Power Supply is the most economical in the market and has more precision and stability than most units. The PS-3005D provides constant-voltage and constant-current Power Supply with low ripple and noise, has high reliability and high accuracy. This unit comes with overload, short circuit & overheating protection which meets the needs of development, laboratory, training and production applications. Potential applications vary from simple school laboratories or personal use, to industrial level R & D, Quality Control and Inspection.

    • nuker on 05/07/2021 - 21:03
      +6

      to make … emmm .. devices … i really cannot say what devices

      • INFIDEL on 05/07/2021 - 21:08
        +6

        Username checks out…

      • eug on 05/07/2021 - 21:18

        You can use it as a fancy Li-Ion battery charger. :)

      • lgacb08 on 05/07/2021 - 22:05

        ebike charger, lol. There're reasons 18650 cells is selling like hot cakes

    • netsurfer on 05/07/2021 - 21:26
      +4

      Mostly for testing simple circuits.

    • outlander on 06/07/2021 - 10:19

      It's a super useful, general purpose DC power supply. A must have for anyone that frequently freaks around with tech or electronics that is missing its power supply or is in suspect condition

      Pair with something like this and you can power on just about any laptop or piece of tech that you come across.

      • netsurfer on 06/07/2021 - 10:50

        Sorry, that's not a good advice. Newer laptops don't charge at constant voltage. If you feed in higher than expected voltage to a laptop, you could fry it.

        This is for someone who have good fundamental understanding of electronics.

        • eug on 06/07/2021 - 11:19

          Newer laptops don't charge at constant voltage.

          The laptops that use those tips aren't new laptops though. ;)
          But yes I agree, equipment like this isn't for any random person.

          • netsurfer on 06/07/2021 - 11:53

            @eug: When I connected a meter to the power supply of an old laptop using one of those tips (running Windows 7), I was surprised that the meter is not showing 19V right away, it actually slowly ramped up to it. Granted, when I did that, the laptop's battery is at 85%. So, even with dated laptops, the switching power supplies and laptops aren't that dumb. Negotiation on voltage and current still takes place.

            • eug on 06/07/2021 - 12:20

              @netsurfer:

              So, even with dated laptops, the switching power supplies and laptops aren't that dumb. Negotiation on voltage and current still takes place.

              What laptop was it?

        • slothful on 06/07/2021 - 11:45

          In addition, being linear this supply is kinda puny so a lot of laptops will push or exceed its current limit - not a good way to test Wavecom's QA. You're far better off with a gruntier (but noisier) switch mode supply for this kind of work.

          • eug on 06/07/2021 - 11:50

            @slothful:

            In addition, being linear this supply is kinda puny so a lot of laptops will push or exceed its current limit

            Gaming or high-powered laptops yes. "Normal" laptops without a discrete GPU would typically use up to 45-60W (otherwise the battery life will suffer) which is less than half of this PSU's 150W rating, so will probably be fine. It'll be a lot less efficient than a good SMPS though!

  • videoman on 05/07/2021 - 20:52

    Same price at ebay (might be cheaper if you have ebay coupons) - https://www.ebay.com.au/itm/333870046078

    Looks like this might be the normal price though?- https://www.ebay.com.au/bin/purchaseHistory?item=33387004607…

  • nuker on 05/07/2021 - 20:52
    +16

    It just looks cool near soldering iron. Now I want oscilloscope, it'll complete the picture

    • INFIDEL on 05/07/2021 - 21:04

      Had access to all that when I was a Uni student. Loved using the oscilloscope.
      But nicer when someone else pays for it & maintains it! Understand now, having it gathering dust would have been a waste - for me.

      • nuker on 05/07/2021 - 21:08
        +2

        Good point, I may ask my boss to reimburse me, its just hard to explain how it helps with AWS automation, lol

        • toasty on 05/07/2021 - 21:34

          Some options for you:

          1. Tell them you needed a UPS to work from home (add a lithium battery and inverter).
          2. Tell them you will have maximum clout with the complete set sitting in the background during Zoom meetings.
  • anderoo on 05/07/2021 - 21:17
    +1

    Rockby has same unit (SKU 41121) listed for $109 if you can pick up from Clayton Vic. The EOFY sale price was supposed to end on 30 Jun but still appears to be orderable at this price via their website. 8 units in stock. Worth a try if you can pick up, or if you can add it to a mail order you were going ahead with anyway. https://www.rockby.com.au/catresultsSql_12.cfm?Stock_no=4112…

  • Bob81 on 05/07/2021 - 21:25
    +2

    If you can spare the extra dollars, having a dual-tracking power supply is very handy.

  • fantombloo on 05/07/2021 - 21:48

    The memory feature might be useful for someone - not me, I've been using benchtop power supplies for years and never needed that. I do think that having one knob for volts and amps limiting would be a PITA - there are many cheaper options with separate controls.

    • nuker on 05/07/2021 - 21:55

      Cheaper ones may be garbage, controlling via first stage. I saw youtube where guy was blowing up leds using cheap bench psu, current control just was not fast enough.

    • joelmuzz on 06/07/2021 - 08:20

      I've had one for years, and yes it is a pain.
      Even worse you have to step through the digits.
      Much prefer the two analogue knobs with instant output.

  • vash5 on 05/07/2021 - 21:57

    Worth noting its shipped and sold by wavecom instruments so any issues Amazon can wash their hands of it.

  • Corgsta on 05/07/2021 - 22:55

    What a good price for a decent supply. I’m still using the analogue Jaycar kit I built in about 1996! I might have to hit this one up.

  • AlmightyBeing on 06/07/2021 - 04:13
    +1

    Is this the type of power supply you need for aluminium anodizing? I was looking at trying to diy some custom parts but the power supplies seemed too much of a hassle to get.

  • Mur on 06/07/2021 - 08:25

    It looks like a clone of the Tenma power supplies sold by Element14.
    I've got a few Tenma 72-10495, which are basically the same as this one, but they have two supplies in a single enclosure, so they can be configured in series (up to 60V 5A) or in parallel (30V 10A). These are decent power supplies for the price, but a bit too noisy.
    If you don't need 5A then you can buy a 3A version from Element14 a bit cheaper.

  • Martyroz on 06/07/2021 - 10:01
    +2

    Coincidentally I bought this 30V/5A last week for $39.99
    https://www.amazon.com.au/gp/product/B07NKHC4Z3/ref=ppx_yo_d…

    • netsurfer on 06/07/2021 - 10:52

      Any good?

      • Martyroz on 06/07/2021 - 13:07

        It turned on so I'm pretty happy so far.

        • toasty on 06/07/2021 - 13:36
          +2

          It’s a Longwei to the top…

    • Rogerwilco on 07/07/2021 - 01:15

      I had one of these a while ago, same model number but under a different brand name. It had a very unstable voltage until it warmed up. By that I mean you'd set it to say 6v and it would creep up slowly and the next time you checked it was around 7v. The rotary encoder type where you can set a precise voltage and current that never drift are much better in my opinion.

      • Martyroz on 07/07/2021 - 10:22

        Thanks for the comment, I'll keep an eye on it when using.

  • bazingaa on 06/07/2021 - 16:04

    My bench power supply was an old AT power supply (from my 1998 PC) :D

  • nuker on 08/07/2021 - 00:20

    Got it delivered, looks real nice and weights a ton, which is good. Bad is noisy fan, but its standard 80mm x 25mm size, 12V 2 wires, will be replaced.

    • Corgsta on 09/07/2021 - 10:46

      Weighs a ton - would be the big tranny (linear supply). Good for low noise. Not as efficient as a switchmode though.

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