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Does anyone have a 9 volt linear power supply circuit for the Propeller Proto Board? — Parallax Forums

Does anyone have a 9 volt linear power supply circuit for the Propeller Proto Board?

idbruceidbruce Posts: 6,197
edited 2011-12-03 13:05 in Propeller 1
Hello Everyone

With the exception of a 6 - 9 volt regulator, has anyone designed and tested a linear power supply for the Propeller Proto Board using readily available parts, such as the parts (transformer, rectifier, and capacitor) that can be found at the local Radio Shack?

I am looking for a design that takes full advantage of the on-board regulators, so the design should be capable of supplying 1.5 amps. I realize it is a no brainer, just trying to save myself a little bit of time.

Thanks in advance.

Bruce

Comments

  • LeonLeon Posts: 7,620
    edited 2011-12-03 04:38
    Why don't you just buy one of the usual 9V wall-warts?
  • idbruceidbruce Posts: 6,197
    edited 2011-12-03 04:59
    Leon

    Well it all goes back to this thread, http://forums.parallax.com/showthread.php?133037-Dear-Mr.-Parallax-High-Voltage-Propeller-Proto-Board.

    Considering the fact that I design machinery, I contend with problems unassociated with normal protoboard use. Some of the motor drivers that I use can accept upto 50v. To get that voltage, I need to supply 120v to a transformer or some other power supply, which is usually encased in some type of enclosure. In most instances, the proto board would preferably be mounted in the same enclosure. In my opinion, running a 120v line + a 9v line from a power adater to the same enclosure or mounting a 120v receptacle within the enclosure for plugging in the adapter is quite tacky, which shows inadequate skills and design. I would much rather supply a 120v line to the enclosure and feed two linear power supplies, one for the equipment and the other for the proto board. Since it appears that my request for a high voltage proto board will not be answered anytime soon, I believe this is the route I will take.

    However, I still hope that Parallax will rectify this problem for me in the future.

    Bruce
  • LeonLeon Posts: 7,620
    edited 2011-12-03 05:11
    I'd just buy one of these:

    http://www.rapidonline.com/Electrical-Power/10W-and-15W-Ultra-compact-PCB-mounting-power-supplies-119272
  • idbruceidbruce Posts: 6,197
    edited 2011-12-03 05:35
    That was pretty interesting. Not sure I am ready for that though.

    Picture this Leon, if Parallax would create the HV Proto Board that I propose, using standoffs, a person could easily create a multi-axis controller from the proposed board by using the information in this thread, http://forums.parallax.com/showthread.php?133309-Propeller-Proto-Board-Stepper-Motor-And-G251-Gecko-Drive-Tip.

    All that would be needed is:
    • 120v line to the main power supply
    • Output from the power supply to proto board and drivers
    • and a few jumpers from proto board outputs to the drivers
    And POOF!!!! A multi-axis controller could be made in minutes.
  • LeonLeon Posts: 7,620
    edited 2011-12-03 05:46
    It's the cheapest solution, if you cost the time involved in sourcing the parts and building a linear supply. It also looks very professional, and will be easy to incorporate in your system.
  • idbruceidbruce Posts: 6,197
    edited 2011-12-03 06:31
    Leon

    Actually, that is a good solution for me personally, as well as building a linear PS.

    However the real problem is that I need a very simple solution for those that are not that savy. I only want to sell mechanical equipment with stepper motors attached, but I also want to provide simple and easy plans for powering and controlling the equipment. I assume that some people will want to provide their own controllers and power supplies.

    Antek sells regulated linear power supplies minus the transformers for $15, but they don't have one for 9V. I will call them and ask for the possibility of a 9V version (just a regulator change). These regulated linear power supplies are a great possibility, just add two screws and transformer power. They are kind of like a PC card, but instead of plugging into a motherboard, they are mounted by the two screws. Pretty nifty but they don't show any pics of them on their website, otherwise I would provide a link. They are available in 5 and 12 volt, 1 amp output.

    It is all a matter of money. If I had the money, I would provide complete solutions. Still thinking my way and struggling through this dilema.

    Bruce
  • 4x5n4x5n Posts: 745
    edited 2011-12-03 10:21
    idbruce wrote: »
    Leon

    Actually, that is a good solution for me personally, as well as building a linear PS.

    However the real problem is that I need a very simple solution for those that are not that savy. I only want to sell mechanical equipment with stepper motors attached, but I also want to provide simple and easy plans for powering and controlling the equipment. I assume that some people will want to provide their own controllers and power supplies.

    Antek sells regulated linear power supplies minus the transformers for $15, but they don't have one for 9V. I will call them and ask for the possibility of a 9V version (just a regulator change). These regulated linear power supplies are a great possibility, just add two screws and transformer power. They are kind of like a PC card, but instead of plugging into a motherboard, they are mounted by the two screws. Pretty nifty but they don't show any pics of them on their website, otherwise I would provide a link. They are available in 5 and 12 volt, 1 amp output.

    It is all a matter of money. If I had the money, I would provide complete solutions. Still thinking my way and struggling through this dilema.

    Bruce

    All Electronics sells a couple of 9 volt supplies for under $15 each. One of them is an external supply like one used by a laptop. It's not a wall wart. Another option for a few dollars less is an "open frame" supply that's intended to be installed in an enclosure.
  • idbruceidbruce Posts: 6,197
    edited 2011-12-03 10:40
    4x5n

    I have been to All Electronics several times over the years, and they never had the nice power supplies they have now. Thanks for getting me to look. :)

    Bruce
  • StephenMooreStephenMoore Posts: 188
    edited 2011-12-03 10:56
    Bruce,

    Wouldn't a 48VDC board be more appropriate for a stepper drive supply with a DC/DC converter for the 9-12VDC Prop Board range?

    SM
  • Toby SeckshundToby Seckshund Posts: 2,027
    edited 2011-12-03 11:21
    I'm going to agree with Leon. If you use a comercially made unit then you get all their type approvals, build it youself and at some point one of the customers will ask for such details.

    The SMPSUs will work for a good number of years (as long as they are not persicuted by inadiquate cooling) and easilly replaced by a same type that you could hold in stock, knowing that that is the right one. If you make it from 20 parts from 20 suppliers then something, somewhere, won't be available.

    As I have often stated, I hate cheap linear wall warts. They are always poorly regulated and smoothed (as well as being extremely ugly instalations).
  • idbruceidbruce Posts: 6,197
    edited 2011-12-03 13:05
    Thanks for all the replies everyone.

    PROBLEM SOLVED!!!!

    I am starting a new thread to summarize.
  • StephenMooreStephenMoore Posts: 188
    edited 2011-12-03 13:05
    However, a custom low profile design to provide sufficient power for say, 4 Gecko 251 drives (48VDC @ 12A) and an on supply board drop for the Prop would be a nice low cost option for would be CNC designers. The whole rig could fit in a nice compact box that would allow the cheap skates of the universe (like myself) to spend a little more money on the rails and spindle.
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