×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Determining input power requirements of Audio Power Amplifiers

Determining input power requirements of Audio Power Amplifiers

Determining input power requirements of Audio Power Amplifiers

(OP)
Anyone have an answer on the AC input (VA)requirements for audio amps using a conventional linear PSU.  For continuous RMS output normal input is 1.5 times o/p to account for transformer efficiency + heating losses etc.  How much can you downrate the PSU for audio use (1000 Watts +).  I've heard claims as low as a factor of 0.4

RE: Determining input power requirements of Audio Power Amplifiers

I respectfully will take in account that the most basic is determined by the characteristics of the power output components, for delivering the power you require, so, you will find out the output secondary voltages must be applied to that components to give the o/power.

Normally for that power, you use to handle several parallel transistors, for not to drive more than 7 or 10 amps each, and from there, you may place a power output secondary voltage.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources