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Introduction to circuit elements
Ohms law and power
16 other sections not shown
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actually adjustable alternating current amount of current amperes apparatus armature battery called capacitance capacitance-coupled capacitor cathode cathode-ray tube cell changes Chapter charge circuit diagram circuit in Fig clock connected constant contacts Courtesy Helen current flowing current will flow curve deliver designed device diode direct current discussed electric electrons example filament frequency grid horizontal increase input terminals input voltage insulation knife switch labeled light bulb magnetic field matched-impedance meter microswitch milliampere motor moves normally closed Ohm's law ohms operate oscilloscope output voltage pair parallel photocell plugged polarity position potentiometer power supply principles problem rated relay coil resetting resistance screen servomechanical shock shown in Fig signal sine wave slider solder solenoid SPDT speed spot stepping switch subcircuits sweep timer toggle switch transformer transistor trigger triode turn vacuum phototube vacuum tubes variable resistor voltmeter volts volts a-c wall socket wire zero