How can I convert 0-5v small signal to up to 70vdc

Discussion in 'The Projects Forum' started by epcole, Jul 13, 2011.

  1. epcole

    Thread Starter New Member

    Nov 18, 2009
    I want to build a 0-70v ac-dc power supply but instead of using a pot to adjust the output, I want to use a remote input signal to adjust the output. is there a way to do this? I'm using it to charge a capacitor so I don't require a lot of current, I just want to be able to adjust the voltage remotely. Any help would be appreciated.
  2. praondevou

    AAC Fanatic!

    Jul 9, 2011
    There are plenty of ways to do this.
    Can you post the part of the schematic where the pot is connected to?
    Remotely you mean with wires, right? Or wireless? What's the distance?

    For wired remote signal you often use current instead of voltage as they are less sensitive to noise than voltage based systems. (for example 0 to 20ma translates into 0 to 5V.)
  3. epcole

    Thread Starter New Member

    Nov 18, 2009
    Here is the link to the diagram, it is for 50v supply. I mean remotely as in using wires.
  4. SgtWookie


    Jul 17, 2007
    The link didn't "take". I think there is a minimum post count of 10 before you can post a link somewhere.

    Posting replies in the "off topic" area do not count towards your total post count.