Crystal Rectifiers and Transistors

adjustment ambient temperature amplifier applications atoms BASE CONNECTION battery Bell Telephone Laboratories biased British Thomson-Houston capacitance carrier cathode cent Ceramic coaxial COLLECTOR CHARACTERISTICS collector circuit collector current collector voltage colour code conductor corresponds crystal diodes crystal valves current amplification factor curves detector efficiency electronic switches element emitter and collector emitter current filled band forward current germanium diodes GERMANIUM JUNCTION germanium rectifier germanium tetrachloride holder impedance impurity insulator JUNCTION RECTIFIER junction transistor limit maximum Mc/s metal MILLIAMPERES MILLIAMPERES Fig mixer modulation n-p-n transistors negative negative resistance noise noise figure OHMS operating oscillator oscillogram oscilloscope output p-germanium p-n-p transistor photo-conductive point-contact transistors potential R₁ range RCA Photophone Ltd resistor reverse resistance reverse voltage shown in Fig shows shunt signal suitable Sylvania Electric Products thermionic valve triode turnover voltage typical V₁ varistor VOLTS whisker zero ΚΩ μΑ ΜΩ