Frequency response of feedback relay amplifiers
- 1 January 1961
- journal article
- Published by Institution of Engineering and Technology (IET) in Proceedings of the IEE Part C: Monographs
- Vol. 108 (14) , 287-295
- https://doi.org/10.1049/pi-c.1961.0039
Abstract
The frequency response of feedback relay amplifiers is analysed by the dual-input describing-function method. At low signal frequencies, the amplifier behaves like a saturating linear amplifier. This picture is modified at higher frequencies, owing to synchronous effects, and it is difficult to achieve satisfactory operation when the ratio of the input-signal frequency to the periodic excitation frequency is appreciable. To eliminate synchronous effects within the signal band, restrictions must be imposed on the forward linear-transfer function. The theory is compared with an experimental example.Keywords
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