using pulse-frequency modulation

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Automatic controllers > electric > in which the output signal is a pulse-train > using pulse-frequency modulation

CPC:

Automatic controllers (G05B13/00 takes precedence) > electric > in which the output signal is a pulse-train > using pulse-frequency modulation

No child classifications to compare. This is a leaf node in both IPC and CPC.