Results 1 to 10 of 50

Thread: How A Valve Guitar Amp Works.

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. #18
    GAStronomist DrNomis_44's Avatar
    Join Date
    Dec 2014
    Location
    Darwin,NT Australia
    Posts
    5,513
    Quote Originally Posted by Muzza View Post
    I have to correct your last point Doc. 240V rms is, in layman's terms, the 'average' of the AC sine wave. The 'peak' voltage of 240V rms is about 340 volts. (339 point something).

    (To clarify, as well as rms value of the sine wave, there is also something called the 'average' value. I used the term 'average' in the above explanation so non electrical people have a better chance of comprehending these concepts.)

    Even if you accidentally touch one phase of a 3 phase system, you're still 'only' going to get a 240 volt wake up call.

    If if you're ever unlucky enough (or stoopid) to touch 2 different phases of a 415 volt 3 phase system, you're gonna cop a peak voltage of about 586 volts. I don't know where you got the value of 678 volts from.


    Cheers for that, I obviously got my maths wrong so thanks for clarifying things for us.

    Here's how I got my value, I started by dividing 240V AC by .707 to get the peak voltage, then multiplied the resulting figure by two to get the peak-to-peak voltage, maybe I took the wrong approach, maths was never my strongest subject at school.
    Last edited by DrNomis_44; 20-09-2016 at 09:29 PM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •