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  1. TerrenceM

    Audio through a transformer.

    Hallo All.. Thank you for all the replies, sorry about my absence. @VE1BLL Tried that, unfortunately ebay couldn't supply what I wanted and I've invested to much money now to walk away. @LiteYear The Smartphone jack (4 pin Aux) only has 1 ground, so Mic ground and speaker ground would have to...
  2. TerrenceM

    Audio through a transformer.

    Good Morning All I am Trying to use my smartphone headset (with mic) to plug work with my landline phone. So I created an RJ9 to 4pin aux jack converter. In theory it was all meant to be so simply, just a walk in the park... But! You can't connect the RJ9 Mic and loudspeaker *ground...
  3. TerrenceM

    Power Consumption before transformer

    Great Response. Thank you!!
  4. TerrenceM

    Power Consumption before transformer

    Morning all. I'm working on a project where I have two power supplies (1 rated at 30W and another at 10W) and I would like to know how do you calculate the power rating of the cable that will be supplying mains to the two power supplies. thank you all. Regards Terrence
  5. TerrenceM

    Connector Dilemmas

    Hallo All. I'm designing a panel and I'm kinda stuck on a rather simple problem. I'm looking for a special type of connector, not really sure if it exists though. From the picture, I have some push buttons and LEDs that will be "crimped into Place" and then a Dsub connector that will have pins...

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