09.02.2015 Views

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

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

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

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

458 Index<br />

Transformers (Cont.):<br />

Isolation Circuit Project, 293–295, 293<br />

isolation type, 13–14, 14<br />

Lab Power Supply Project and,<br />

107–108<br />

Ohm’s law and, 96<br />

polarity of voltages in, 112<br />

power, 95<br />

power transfer ability (volt-amp rating),<br />

96, 146<br />

primary and secondary coils in, 95, 95<br />

ratio of, 431<br />

recycled/reused, 23<br />

step-down/step-up, 376<br />

turns ratios in, 95<br />

volt-amp rating in, 96, 146<br />

Transient-suppression diodes, 209<br />

Transis<strong>to</strong>r action, 154<br />

Transis<strong>to</strong>r-transis<strong>to</strong>r logic (TTL), 345<br />

Transis<strong>to</strong>rs, 36–37, 37, 153–200, 155, 156<br />

ac circuit using, 175–176, 175<br />

amplifier comparisons for, 167–168<br />

base bias, 163<br />

base current in, 158, 192<br />

base of, 155<br />

base-<strong>to</strong>-collec<strong>to</strong>r junction in, 156<br />

base-<strong>to</strong>-emitter junction in, 156<br />

beta-enhanced pairs, 191–192, 192<br />

bias in, 163, 176, 176, 192, 230–235<br />

bias voltage divider using, 163–164<br />

bipolar, calculations for, 155, 430<br />

collec<strong>to</strong>r current in, 158<br />

collec<strong>to</strong>r of, 155, 156<br />

common-base type, 166–167, 167<br />

common-collec<strong>to</strong>r type, 165–166, 166, 177<br />

common-emitter type, 162–165, 163, 177<br />

current amplification fac<strong>to</strong>r (beta) in,<br />

171–173<br />

current flow through, 192<br />

current gain in, 160<br />

cu<strong>to</strong>ff values in, 174<br />

Darling<strong>to</strong>n pairs, 191–192, 192<br />

depletion area in, 157<br />

diodes vs., 155<br />

DVM testing of, 169–170, 200<br />

dynamic settings for, 176<br />

emitter of, 155, 156<br />

emitter resis<strong>to</strong>r in, 164<br />

emitter voltage in, 192<br />

emitter-follower type, 177<br />

field-effect transis<strong>to</strong>rs, 301–316, 430<br />

forward bias in, 156<br />

impedance in, 179–184,<br />

Transis<strong>to</strong>rs (Cont.):<br />

impedance matching in, 168, 169,<br />

182–183<br />

invention of, 154–155<br />

Lab Power Supply Project using, 193–200<br />

leakage current in, 162<br />

load balancing in,230–235<br />

matched (complementary) pair sets<br />

of, 236<br />

negative feedback in, 164<br />

NPN type, 155, 170, 170, 193<br />

pho<strong>to</strong>transis<strong>to</strong>rs, 213<br />

PNP type, 155, 170, 171, 193<br />

quiescent settings for, 176<br />

recycled/reused, 23<br />

repeatability in, 178–179<br />

saturation values in, 174<br />

series-pass, 186<br />

source voltages in, 162–163<br />

stability in, 178–179<br />

temperature coefficient in, 162<br />

thermal runaway in, 162, 234–235<br />

voltage drop in, 158–159<br />

voltage gain in, 177–178<br />

Transitional change in multivibra<strong>to</strong>rs,<br />

349–350<br />

Transorbers, 209<br />

Triacs, 287–288, 288<br />

Triangular waveshapes, 396, 400–401, 400<br />

Trigger pulse timing, 288<br />

Trigger voltages in schottky diodes, 207<br />

Trigonometry, 429<br />

Trim-pots, 32<br />

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

Trip Point Relay Driver Project, 337–338,<br />

337<br />

Trivalent impurities in<br />

semiconduc<strong>to</strong>rs, 117<br />

Troubleshooting tips, 110–111<br />

True power, 93<br />

Truth tables, 345–348, 346, 348<br />

Tunnel diodes, 207, 208<br />

Turn-on pulses in diacs, 209<br />

Turn-on transients in amplifiers, 277<br />

Turns ratio, transformer, 95<br />

Twin-T notch filter, 386, 392–393, 401–404,<br />

401, 403, 404<br />

UJT Audio Oscilla<strong>to</strong>r Project, 296–298, 297<br />

Ultiboard, 369<br />

Ultraviolet ROM (UVROM), 366<br />

Unidirectional surge clamping diodes, 209

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!