Elements of Radio: A Pre-induction Training Course |
Contents
REVIEW OF ELECTRICAL THEORY | 15 |
ALTERNATING CURRENT | 45 |
CHAPTER PAGE | 57 |
Copyright | |
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alternating current alternating e.m.f. amperes amplification factor amplitude antenna applied audio battery beam bulb C₁ called capacitance cathode ray tube charge circuit containing Class A Amplifier coil condenser conductor connected crystal current flow curve cycles per second detector diagram dielectric diode direct current dry cell effect efficiency electrical electromagnet electrons Emax energy Example Explain filament filter frequency grid bias grid voltage headset heater Hertz impedance increased induced e.m.f. inductance input instantaneous L₁ lamp load loud speaker magnetic field meter method microphone milliammeter modulation move negative obtained Ohm's Law ohmmeter ohms operation oscillator output wave form peak pentode phase angle plate current plate voltage positive power supply Problem produce R₁ radio receiver radio telegraph radio-frequency reactance rectifier resistance resistor resonant circuit result rotating screen secondary shown in Fig signal sine transformer transmitter triode tuned vacuum tube variations varying vector vibration voltmeter volts watts wire zero