
Audio 57
error can be changed to a much smaller cubic one by connecting
0$%
{
=
Re)
from the wiper to the top of track, giving zero error at 1 kHz.
References
Hickman, I. (1993)
Analog
Electronics,
Heinemann Newnes, Oxford.
Rosens, R. (1982) Phase-shifting oscillator. Wireless
World,
February,
38-41.
Tobey R. and Dinsdale, J. (1961) Transistor Audio Power Amplifier.
Wireless World
November, 565-570.
Low distortion audio op-amp
The op-amp described in this article has very low distortion, only bet-
tered by some other devices which have a much lower input impedance,
restricting their application somewhat.
Audio op-amp with its head in the clouds ...