1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

Main voltage controll

Discussion in 'High Voltage' started by yves-michel, Oct 23, 2011.

  1. yves-michel

    yves-michel New Member

    Joined:
    Sep 11, 2011
    Messages:
    1
    Likes:
    0
    I would like to control the main voltage(240V,AC) so to get from close to zero to full main voltage.The circuit will be before full bridge rectifying and smoothing capacitors. In addition the circuit should be able to supply at least 10 amps. I know there are variacs but they are bulky and expensive. Any suggestions on how it could be achieved?
    Many thanks,
    Yves
     
  2. tcmtech

    tcmtech Well-Known Member Most Helpful Member

    Joined:
    Feb 22, 2009
    Messages:
    6,654
    Likes:
    429
    Location:
    Sawyer, North Dakota, USA
    Phase angle control is common but needs a considerably more complex control circuit to make it stable and reliable. The Variac method is by far the simplest and most robust way to do it.

    What do you need 0 - 340 VDC at up to ten amps for anyway?
     

Share This Page