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Tab Electronics Guide to Understanding Electricity ... - Sciences Club

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Index<br />

459<br />

Unidirectional transient suppression<br />

diodes, 209<br />

Unijunction transis<strong>to</strong>r (UJT), 287–289,<br />

288, 296–298, 297<br />

Uninterruptible power supplies (UPS), 319<br />

Used parts (See recycled/salvaged parts)<br />

Vacuum tube voltmeter (VTVM), 15, 128<br />

Valence shell of electrons, 116<br />

Varac<strong>to</strong>r diodes, 206–207, 207<br />

Variable capaci<strong>to</strong>rs, 34<br />

Varis<strong>to</strong>r diodes, 209<br />

Vitreous enamel resis<strong>to</strong>rs, 29<br />

Volatile memory, 354, 365<br />

Volt-amp rating, transformers, 96, 146<br />

Volt-ohm-milliammeter (VOM), 14–15, 129<br />

Voltage, 39–42<br />

dissipation of power calculation using,<br />

65–68, 73<br />

exercises using Ohm’s law <strong>to</strong> calculate,<br />

60–80<br />

ideal vs. actual values, 61–62, 79–80<br />

Ohm’s law, 46–49, 60–80,<br />

parallel circuits, 49–53, 49, 73–75, 71<br />

power relationship <strong>to</strong>, 58<br />

series circuits, 53–55, 53, 62–65, 63, 64<br />

series-parallel circuits, 55–57, 56, 57,<br />

68–73<br />

working volts dc (WVDC), 142<br />

Voltage decibel logs for audio amplifiers,<br />

238<br />

Voltage dividers, 163–164, 387<br />

Voltage Doubler Project, 226, 226<br />

Voltage drop, 66, 77–78, 158–159<br />

Voltage gain, 154, 177–178, 249<br />

Voltage lag, 140<br />

Voltage multiplier, 427<br />

Voltage polarity, 41–42<br />

Voltage rating of capaci<strong>to</strong>rs, 33<br />

Voltage Reference Project, 224–225, 224<br />

Voltage regula<strong>to</strong>rs, 185–186, 186, 187,<br />

195, 195<br />

integrated circuits (IC) and, 329–330<br />

LED-based, 225–226, 226<br />

negative regulation, 195, 196<br />

positive regulation, 195, 196<br />

zener-diode based, 203–206, 204,<br />

224–225, 224<br />

Voltage response, 138–139, 138<br />

Voltage-controlled capaci<strong>to</strong>rs, 206<br />

Volts, 41<br />

Watts, 45, 431<br />

Waveform analysis, 16–17<br />

Wavelengths, 408, 431<br />

Waveshapes, ac, 82<br />

Wetting, in soldering, 98<br />

Window compara<strong>to</strong>rs, 338<br />

Wiper, in potentiometers, 32<br />

Wiring, 12–13, 106–107<br />

Words, in computer instruction, 363–364<br />

Workbenches, 9<br />

Working volts dc (WVDC), 142<br />

Zener diodes, 202–206, 202, 224–225, 224<br />

Zero reference<br />

alternating current (ac) and, 84–85, 84<br />

amplifier, 233<br />

diodes and rectification, 124<br />

Zinc batteries, 318<br />

Zobel network, 250

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