n. 【无线电】中和式高频调谐放大器；衡消接收法；中和接收法。 adj. 【无线电】(接收机)衡消式的。 a neutrodyne receiver 衡消接收机。
The Neutrodyne was a particular type of tuned radio frequency (TRF) radio receiver, in which the instability-causing inter-electrode capacitance of the triode RF tubes is cancelled out or "neutralized". In most designs, a small extra winding on each of the RF amplifiers' tuned anode coils was used to generate a small antiphase signal, which could be adjusted by special variable trim capacitors to cancel out the stray signal coupled to the grid via plate-to-grid capacitance.
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