Page 230 - Troubleshooting Analog Circuits

Index 217

output ringing vs. load current, 99. Widlar, Robert J., 36.77.88 worst-case analysis, 55.72-74.90. 1 12,
118, 136,191-193 Widlarize, 9 128,137-140,207
Pease’s Principle, 99 wires and cables, 6, 10, 15, 20,22,25, quasi-random short-circuit test. I38
user-friendly, 135 50.6244. 153, wrist strap, 23,8 1, 160
withexternalboost transistor, 136137 coax cable, 62
problems with voltage regulators: gimmicks, 20,62 Yamatake, Mineo. 24,88
inadequate supply filtering. 37-38. Litz, 38
137 multiple-conductor, 6344 X-acto knife, 23
inadequate heat sink. 135 plastic-insulated, 20.62
inductive loads, 137 ribbon cable, 63 Zener diodes, 7 1, I35
oscillation, ringing, 99, 118, 136 shielded wire, 62-63 avalanche diodes, 7 1
over-voltage. 137 speaker cable, 63 base-emitter junctions. 77.79,
popcorn noise. 137 Teflon-insulated, 6243 15sC161
voltage map, 20, 106. 126, 144. 156 twisted pairs, 20.62. I1 I composite with transistors. 72.72
voltage-to-frequency converter (VFC), problems with wires and cables: integrated-circuit types. 7 I, 135
xi.21, 13Ck131, 134. 148 high-frequency degradation, 63 problems with:
as ADC. 130 cross-talk, 47.62, 1 I1 abuse by surge of charge. 7 1
capacitors for, 13 1, ground loops, 63 instability when turned off/on, 7 1
isolated output, 130 leakage, 37 long-term stability, 7 1
linearity, 131 secure connections, 62,63, 163, low-voltage, 7 1
tempco. 13 1 185 soft knee, 7 1
trim of tempco. 13 1 separate ground systems for power, tempco imperfect. 7 1
signal, chassis, 129-130 reference-grade Zener diodes, 7 1. 135
wasting time. 9, 14, 16 too big, 37,80, 149-150 symmetrical, 72
Watts, Malcolm, 160, too small, 38 transient-voltage suppressors, 7 I
waveforms, 8. 15, 17,20,35.60,70, just right, 150 vertical fuses or “anti-fuses,” 72
122. 131. 150, 194, wire brittleness. 62 Zeners to be zapped. for trimming.
waveforms, weird, 35,6243, 113,126, wits, 3, 14 72
185.204 workbench, 23, 158 Ziggy, 11