Page 225 - Troubleshooting Analog Circuits

212 Index

funny, amount of, 5 snubber, 37-38 LM3xx. See LMlxx (Linear Monolithic
fuses. See also circuit breakers, 33-34, steel, 34.38 ICs made by National)
140,164 test conditions, 35-37 LMIO, 21,24,96,105, 188
fatigue failures, 38 turns. See windings LM12.105
ratings, AC, 34 used in switchmode regulator, 138, LM35 temperature sensor IC, 24.25
ratings, DC, 34 139,183-184 LMlOl/LMl01A/LM301A, 77,96,188
FVCs. See frequency-to-voltage con- windings, 35-36 LMl07/LM307,96,188
verters wire losses, 35,38 LM108LM308,72.96,118,188,205,
instrumentation amplifier, 182 207
Giles, Martin, 44 insulation leakage, measurement. See LMl 10/LM310.100,21,116
gimmick. See under capacitors under cwent detector LM111/LM311,113,115,194
glass-epoxy beams, low-picofarad integrator, operational amplifier circuit, LM117LM317, 10,11,37-38,53-54,
"glitches." See under digital ICs 89,99.104,153 80, 105, 106, 130, 136,177,
grid-dip meter, 22, 109 intelligence, artificial (AI), 1 1. See also 178,190-192
ground, 57, 129-130,145, 156. under stupidity, artificial LM120/LM320,130, 179
161-162. See also under intelligence, genuine, 1 1. See ulso LM122LM322.120
printed circuit boards. See stupidity, genuine LM123LM323.58
also under analog-to-digital Interconnection Produp Inc., 185 LM124LM324,96.115-116,124,190,
converters intermittent problems+echniques for LM129/LM329,18,71,135
ground loops, 25,63, 110,129-130, 156 solving, 15,32,50,60,63, LM131/LM331,21,21,131,148-149,
121-122.143-144, 153,170, 206
hrb, 78-79 175 LMl33LM333, 105
HA2525.81 LM136/LM336,7 1
hacksaw, 9.23 judgment, 12.56.81.87 LM137LM337.105-106,178
hair-dryer, 23 LM138/LM338.105,137,178
hairline opens, 8,51 Kelvin connections, 57-58,59,80, 178 LM139/LM339,111, 115-116
hairline shorts, 24.5 1 4-terminal resistors, 57-58 LM140LM340.178
hammer, 9,38 examples in tests, 58 LM149/LM349.102,190
hand tools, 14,23 Kelvin clips, 57 LM15O/LM350,37,105,137,178
heat sinks, 82. 116,135,165,178,180 Kelvin sockets, 57-58. 198 LM158LM358.96, I15
bolts just right, 83, 180 remote-sense regulators, 98.59 LM168/LM368,105
bolts too loose, 82, 180 kilovolts, 27 LMl69/LM369,71,105,135
bolts too tight, 83. 180 Koontz, J. 162 LM I85LM385.7 1
burrs between heat sink and tran- LM192LM392, 116
sistor, 83 Lamoureux, Richard, 170 LMl93LM393.115
just right, 83,84 laser, 6 LMl94/LM394,24,78-79,196
too big, 84 latches, 18,60, 108, 117-1 18, 140, 156 LM196/LM396,80,105, 178
too small, 82,86,106,135 comparator latches, 11 3 LM199/LM399,71,135
Heath Company, 22,59, 107, 109 current-limited power supplies, 18, 18 LM555,120
Hoffman, John Paul, 167 destructive, 118 LM612,113, 115
humidity, 10,55,61, 147 non-destructive, 118 LM615, 113
hypothesis, 6, 107 power supply sequencing, 118 LM709,104,116
hysteresis. See under comparators, storage scopes, 15 LM723,179,181
problems with leakage, current, 10,4142,44,52-56, LM74 I, 18,18,77,90,97,188
6142.65-70.81.121, 128, LM2575, 139,183,183, 185
impedance analyzer or bridge, 25,30,35 177 LM2576,139
identical, 168 leakage currents, measurement. See LM2577.139
inductance, 110,116,13~139,144, current meter LM2578.139
148,162,183-185,191-193. leakage inductance, 35 LM2579.139
207 LEDs. See light-emitting diodes LM3045,79
inductors, 34-39, 138. See ulso trans- Lembo, Dr. Nicholas, 11-12 LM3046,104,196
formers and relays LF147/LF347,116,190 LM3086.79
air, 34 LF 155LF355.188-189 LM3524, 139,140,184,185
air gaps, 35 LFl56/LF356,18,93,96,97,188-189 LM6 12 lLM632 1.1 17
beads. 8.37.84.87.109, 162 LF157LF357, 102,189 LM616ULM6361.96, 100, 189
core material, 34-35 LF198LF398, 132,159 LM6325, I17
core losses, 35,38 LF351,116,188 LM6361. See LM6161
ferrite, 35-39 LF400, LF401.91.189 LM7800,178
incoming inspection of, 36 LF411,188 LM7900,179
"kick" from, 36-37 LF6197, 132 LMC555,120
materials, 3C39 light-emitting diodes (LEDs), 73-74, LMC660,53,81,96,190
measurements of: 196,197. See also diodes LMC662,81,96,159,190
ohmmeter and problems of, 35-36, DEADs (Darkness-Emitting Arsenide lock washers, 63. 170. 173
38 Diodes), 74 locomotives, 3,7
inductance meter, 35-36 polarity, 73 logarithmic amplifier. See current
Q-meter, 35 reliability, 73 meter, logarithmic
R-C damper, 37 uniformity, 72 logarithmic current detector. See under
saturation, 35-36.38 list of things that can't be causing the current meter, logarithmic
shorted turn, 35.38 problem, 3.7 logic analyzer, 25, 123, 140