Help I need a replacement adapter, but I have no idea what to ask for.

Discussion in 'computers, web and general tech' started by ATOMIC SUPLEX, Apr 20, 2018.

  1. ATOMIC SUPLEX

    ATOMIC SUPLEX Member Since: 1985 Post Count: 3

    My vestax record players adapter has just gone poof. Well actually it was my scanners adapter but apparently the correct voltage etc (never had the offical vestax one). What the hell do I ask for on the internet or in a shop????
    IMG_20180420_195353.jpg

    This is the little bit at the other end. Obviously these are all different sizes too. Bit lost.

    IMG_20180420_195409.jpg
     
  2. twentythreedom

    twentythreedom Seagulls are cunts

    Google the model number obvs

    Eta or "vestax record player adapter" for example

    :hmm:
     
  3. ATOMIC SUPLEX

    ATOMIC SUPLEX Member Since: 1985 Post Count: 3

    There is no model number, just a Vestax handy trax and there are different models. The one that always comes up on a Google is the usb version, which isn't mine.
     
  4. ATOMIC SUPLEX

    ATOMIC SUPLEX Member Since: 1985 Post Count: 3

  5. Saul Goodman

    Saul Goodman It's all good, man

    It's a 12V DC, 1.25Amp, centre-positive power supply.

    But you'll need to measure the outside diameter of the round plug, and the inside diameter also, as they do vary

    Nice toes, BTW :D
     
    mauvais likes this.
  6. Saul Goodman

    Saul Goodman It's all good, man

    That's weird. The power supply is DC but that last picture says it's AC :confused:
     
  7. souljacker

    souljacker A bit of skullduggery

    Get a universal transformer. They have all the different adaptors. But you need to make sure the power rating is right. Your adaptor says it's 12v @ 1.25A but the pic on the back of the vestax it actually asks for 12v@300mA so you may have been overloading it anyway. Possibly why it's gone 'poof'.
     
  8. souljacker

    souljacker A bit of skullduggery

    Oh yeah. That's a bit odd. Unless, under normal operation, it's designed to power itself directly from an alternator on a car.
     
  9. ATOMIC SUPLEX

    ATOMIC SUPLEX Member Since: 1985 Post Count: 3

    Oh well its not the power supply that came with the record player. Been using it for years though.
    The record player says it wants a 12v AC 300ma adapter.
     
  10. Saul Goodman

    Saul Goodman It's all good, man

    Alternators all have rectifiers built into them, so DC comes out, not AC.

    It's a strange one.
     
  11. ATOMIC SUPLEX

    ATOMIC SUPLEX Member Since: 1985 Post Count: 3

    Been searching for a 12v ac 300ma adapter on line but can't find one. Don't really want a switchable if possible.
     
  12. joustmaster

    joustmaster offcumdun

    Last edited: Apr 20, 2018
  13. Saul Goodman

    Saul Goodman It's all good, man

    Then you want a 12V AC adapter. 500mv or more would be fine.
     
  14. mauvais

    mauvais change has become unavoidable

    That's not how electricity works, is it?
     
  15. Saul Goodman

    Saul Goodman It's all good, man

    No, it isn't.
     
    gentlegreen likes this.
  16. souljacker

    souljacker A bit of skullduggery

    I have no idea how electricity works. It's basically magic as far as I'm concerned.
     
    gentlegreen and Saul Goodman like this.
  17. joustmaster

    joustmaster offcumdun

    Your house supplies 240v and 16amps to your wall socket. That doesn't mean a devices connected to a socket will be forced to eat 16amps. It will have 240v across it though
     
    mauvais likes this.
  18. joustmaster

    joustmaster offcumdun

    EDIT: AM WRONG:

    Anyway, I think AS needs a DC supply, not an AC one...
    Anyone else?
     
    Last edited: Apr 20, 2018
  19. mauvais

    mauvais change has become unavoidable

    You can use an overpowered charger (NOT overvoltage) without any problem. The current rating, e.g. 1A, is the maximum it can supply, which the equipment won't necessarily draw. The opposite, an underpowered supply, would cause problems.

    Back on the subject of this equipment, the item in question really does seem to be 12V AC though, so a DC charger will have been doing something weird.
     
  20. 2hats

    2hats

    Essentially, the key things are to get a DC power adapter of the correct voltage and sufficient current. It doesn’t matter if the current it provides is higher than that the device it is supplying is higher but try to pick one reasonably close (the device will only draw the current it needs, well provided it isn’t faulty, but in that case you have other problems anyway). Lastly, as mentioned above, make sure the pin polarity is correct. Another option is to get an all singing, all dancing adaptor with selectable voltage, sufficient current and changeable tips - places like Maplin (RIP) do them.
     
  21. joustmaster

    joustmaster offcumdun

    Sure?
     
  22. mauvais

    mauvais change has become unavoidable

    No, I think it really is AC, from both the plate and looking up the item specs. It seems that certain AC devices, depending on circuit design, can run off DC so I guess that's why it worked. Not recommended though. What exactly would happen is beyond my knowledge.

    Could most AC devices run off of DC rather than AC?
     
  23. 2hats

    2hats

    Apparently not now (’scuse me). Searching around seems the Vestax adapters marketed in the states are indeed all AC/AC.
     
  24. electroplated

    electroplated off minehead

    You just need an AC/AC power supply with a selection of plugs capable of delivering 300mA (or greater). Amazon, ebay etc all have them
     
  25. Saul Goodman

    Saul Goodman It's all good, man

    I don't know how it's been working properly with that DC supply. The device will have a bridge rectifier in it, which rectifies the AC to DC. 12V AC run through a bridge rectifier will output just under 17V DC, but if you run DC through a bridge rectifier, you will get DC out but there will be a slight voltage drop of about 1V, so instead of the 16.968V DC, you'd only be getting 11.
     
    Last edited: Apr 20, 2018
    mauvais likes this.
  26. 2hats

    2hats

    Maybe the ripple is really bad :p
     
  27. Saul Goodman

    Saul Goodman It's all good, man

    Good thinking Batman :D
     
  28. mauvais

    mauvais change has become unavoidable

    Given a rudimentary American AC product, wouldn't you need to take frequency into account too? 60Hz expected in the US, 50Hz here, so you'd be looking to step down the voltage - 17V would convert to about 14V. Still off but less so. I've precisely no idea whether this still has any relevance when faced with supplying DC to it.
     
  29. 2hats

    2hats

    Yup. The turntable would, if designed for 60Hz, run at 5/6 the rpm here. Separate issue from running an AC device off a ‘DC’ feed.
     
  30. ATOMIC SUPLEX

    ATOMIC SUPLEX Member Since: 1985 Post Count: 3

    It played records.
     

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