The typical input resistance of this device.
(Typical-Input-Resistance Lm380-Audio-Power-Amplifier (* 150000 Ohm))
(=> (Typical-Input-Resistance $X $Y) (Resistance $Y))
(=> (Typical-Input-Resistance $X $Y) (Semiconductor $X))
(Typical-Input-Resistance Lm383-7-Watt-Audio-Power-Amplifier
(* 150000 Ohm))
(Typical-Input-Resistance Lm383a-7-Watt-Audio-Amplifier
(* 150000 Ohm))