219147 ⎘
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements; Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of distributed coupling, i.e. distributed amplifiers in discharge-tube amplifiers
Bias circuit
#2RIAA CORRECTION OF AUDIO SIGNAL WITH USE OF TRANSFORMER
#3Method for RIAA correction of audio signal with use of transformer and capacitor
#4Method for RIAA correction of audio signal with use of transformer