The maximum audio signal which circuit can work is 210 mV. Distortion is less than 0.01%. Time delay of the noise reduction circuit is determined by the time constant R7C4. For the schematic values, ...

Different models, such as water flowing in a central heating system, can be used to understand electrical circuits. Find out more with BBC Bitesize. For students between the ages of 11 and 14.

News Published: 23 June 1934 Permeability Tuning in Radio-Frequency Circuits Nature 133, 956 (1934) Cite this article ...