The amplifier under test is fed with a large low-frequency sine-wave input on which 50us pulses of alternate polarity are superimposed. These pulses drive the amplifier's protection circuits into current-limiting, and the set-up gives a CRT presentation having current-limit values vertically and instantaneous output voltage horizontally. The displays obtained, which sometimes disclose unsuspected amplifier design faults, are compared with those derived in tests made on loudspeakers using programme and other inputs.
Author:
Baxandall, Peter J.
AES Convention:
82 (March 1987)
Paper Number:
2421
Publication Date:
March 1, 1987
Subject:
Measurement and Instrumentation
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.