Page 228 - Troubleshooting Analog Circuits

Index 215

wire-wound, power, 27, I39 soft-start. See under switch-mode switchers”, (TM ). 138- 139.
wire-wound, precision. 27.28-29. regulators 183
149. 158 software. I. 133. 140. 136. 155. 166. consulting engineer, need for, I39
with spirals. 27-28.28 I73 current limiting, 139
series connection of R,. to get low solar cells, 74.75 problems with switch-mode regula-
capacitance. 30.31 heating problems. 74 tors
resistor substitution box, 18, 19. See packaging problems. 74 design problems. 138-1 39
also under RC substitution solar-powered night-light. 74, 167 layout problems, I38
boxes solder, 8. 21-24.48.5 I. 58-59.62. loop stability, 109
resistor failures or problems: 81, 105. IS?. 162. 167. 170. need for current probes. 15
capacitance. 30.31 I86 network analyzer for, 109
cracks. 32-33 types of solder: Pease’s Principle. 99
find by nose. 32 acid-core solder, 59 “soft-stan“ circuit, 37. 141.
inductance. 139 aluminum solder. 59 139-1 4 I
ohmmeters. 33 low-temperature solder, 46. 59 step response. IOY
open-circuits, 32-33 rosin-core solder, 59 radiated and transmitted noise. I38
Seebeck effect. 33 silver-solder. 59 when to design a switcher/ when
thermocouples. See Seebeck effect stainless-steel solder, 59 not to, 138
too much current, 33 tin-lead solder (ordinary solder). switch-mode power supplies. See
wrong value, 26. 176. 185.206 58-59 switch-mode regulators
RF shielding. 162-163 problemb with solder: 153 switches, analog. See under analog
rheostat. See resistors, adjustable cold-soldered joints. 8.24.58-59. switches
ringing. 4-U5.56,99-100. 162. See I86 ,witches, mechanical. 6142. 95
also under Pease’s Principle, joints not soldered. 59. 186 problems of switches-refer to
and capacitors for power solder shorts, 2 I. 24. 50. I86 problems of relays. pages
supply bypass unsuitable soldering iron, 5 I 6142
”runt” pulses. See under digital ICs wave soldering, 46.59 switching power supplies. See switch-
wrong type of solder, 59 mode regulators
safe. ito keep good parts in). 104-105. See also under solder-wick. solder- bymptoms. 2,4.9. I I. 26. 37. 34. 106.
I37 sucker See also cluer
safe operating area. See under transis- solder-mask. 5C-5 I, 55
tors. bipolar solder-sucker, 23, technician. I. 3.54. 8-9. 14. 26. 32. 34.
safety margins, 6.82. 86-87.99. I I?. solder-wick. 23 38.48.51.6~61. 119. 136.
118-1 I9 soldered joints. 57 149. 151. 155. 159. 171. 191
safety goggles. 23.4 I. 67, 139 soldering iron, 22-23. 32.5 I, 82. I 10. Tektronix. 79, 105
safety, 23.40. 139 150. 158. 1.59 Teledyne Philbrick. vii. xi. X. 76. 107.
sample-and-hold circuit. 131-133 solderless breadboards, 153. 203
de-glitchers. 132 spare parts. 20.25, 137. 172 Teledyne Components. vi1
acquisition time. definition of. spectrum analyzer. 25 telephone. 9, 20, I55
132-133 SPICE. See computer modelling television receivers. IO. -12. 162-163
aperture delay, definition of, I32 ”spreadsheets,” I66 temperature. 23
LF6197, 132 spring-loading, 48 temperature cycling. 26,55-57. 170
low-soakage capacitors for, 13 1 start-up circuits. 7, 14C132 temperature meter (thermometer). 2-1.
problems driving a Multiplexer analog, 7. 141-142 25,63.73
(MUXj. 132 Czar of Start-up circuits. 7 temperature sensors. 24,25,83, I I I,
schematic diagrams, 8-9.20.57. 106. digital. 14CL141 165. See ulso under thermo-
15cS157. 171 production tests for start-up, 141-142 couples, thermistors
screwdrivers, 23 steam engines. See locomotives temperature, excessive. 42.59.7-1.7X.
screws. 165. 170 step response, 15. 15,16,89,93-94. 82-83.105
Seddon. Bruce. x IIC-111. 115-116. 122. 131. finger as sensor, 83
second-sourcing, 7G7 I, 97 133. 139, 191. 194.207. See infrared image detector with TV
shielding. See under RF shielding ulso under bandwidth, and display. 83
shon-circuit recovery, 105 frequency response Tempilaq. 165
short-circuit to + or - supply. 105, I18 storage oscilloscope. See under oscillo- test points. See under probe points
short-circuit detector. 21, 21. 161 scopes testability, design for. 7
sin. 12 strip-chan recorder, I I I. 112 thermal limit circuits. 105. 106
Sinclair. Ian. 33. 39 Sturgeon, Bill. 165-166 no thermal limit, I17
“single-supply operation,” 96. 1 I5 substitution boxes. See under resistors, oscillation in thermal limit, 106
Smith. Marvin, 163 capacitors, R-C boxes thermal probe. 156, 159
Smith. John I.. 2, 12 substitution technique. See under thermal response. 24.82. 104-105. 1 11.
snip-trim. 152. 153 troubleshooting techniques 147. 149. 155-156. 165
SOA (Safe Operating Area). 81.84-85. Sunday School. I2 tests for. 24. 105. I I 1. 156. I70
88 superheater, 3 thermistors. 37
soakage. See under capacitors switch-mode regulators. 1-2. 18, 22.41. thermocouple. 24. 28. 33.41.98, I66
soap and water, 10.54.81 66-67,73,87. 138-141. 159. thermocouple meters, 24. 24
sockets. See under connectors 183,184. See also under thermocouple, amplifier for, 24.24
socket capacitance, 60 voltage regulators (linear) thermometer. See temperature meter
soft diodes (low conductance). See (LM2575. -2576. -2577. - three-wire-to-two-wire adapters i line-
under diodes 2578. -2579). (“simple cord), 25