Page 451 - Power Electronics Handbook

440 Index

Transformer - continued 'bo-segment motor, 282
interphase, 185, 228 Two-step
isolating, 85 diffusion, 10
linear, 293 waveform, 87
loss, 85
neutral point, 229
pulse. 85 UHF, 60
tapped primary. 334 Ultrasonic bonding, 59
taps, 177 Underdamped resonance, 255
utilisation, 178, 185, 349 Unidirectional
Transient converter, 178, 188
thermal resistance, 64 operation, 125
voltage, 86, 101 switching, 31 1
voltage distribution, 56 toque, 381
Transistor Unijunction transistor, 76
construction, 30 Unintemptable power supply, 359
inverter, 290 Unipolar transistor, 3 1
unijunction, 76 Universal voltage multiplier. 220
Transit Utilisation factor. 187
load, 186
time, 27
Transmission-line loss, 362 V-groove. 37
Transmitter power, I I8 V-notch, 129
Trapping centres, 13 Valance bands, 15
Triac, 51 Valley point. 77
Trigger Variable
circuit, 428 frequency control, 142, 399
current, 52 frequency drive, 315, 402
devices, 75, 80 frequency mode, 244
diode, 408 mark-space mode, 244
frequency, 300 slip coupling, 361
point, 81 speed constant-frequency, 238, 361
point voltage, 167 VDE, 113
threshold, 167 Vertical
Trip circuit, 406 dipole, 102
Triple-diffused, 30 structure, 36
Triple frequency current, 187 VHF, 60
Triplen harmonics, 327 VMOS, 37
Turbulent flow, 67 Voltage
Turn-off boosting, 143, 308
gain, 49 clamping device, 125
loss, 62 clearing, 132
pulse, 75 control, 142, 274. 399
time, 27, 243 dependent resistor, 126
Turn-on distortion, 176
pulse, 75 doubler, 217
time, 27, 46 fed inverter, 345
'belve-pulse feedback, 283, 351
converter, 187 Hall, 385
cycloconverter, 229 multiplication circuits, 217
Two-layer device, 53 multiplication factor, 220
'bo-pulse multiplier, 428
converter, 182, 191, 203 quadrupler circuit, 220
cycloconverter, 228 reference diode, 53
unidirectional wave, 313 regulation, 355