interstage coupling การใช้

Within each compartment can be seen " ( from top ) " : the triode tube, the interstage coupling coil, and the capacitor attached to its front panel tuning dial.
Low frequency oscillations like motorboating indicate that some device or circuit with a large time constant is involved, such as the interstage coupling capacitors or transformers, or the filter capacitors and supply transformer winding.
In the 1920s, commercial IF filters looked very similar to 1920s audio interstage coupling transformers, had very similar construction and were wired up in an almost identical manner, and so they were referred to as " IF transformers ".