Page 76 - RTH3BA Preview

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resistances in parallel 54 time constant 101, 104, 120
resistivity 26 types of capacitors 97
resistor colour code 32 unit of capacitance 91
resistor symbols 36 voltage across series capacitors 95
series circuits 47 voltage after any time “T” 104, 105
series-parallel circuits 60 voltage rating of capacitors 96, 11
simple electric circuit 16 what is capacitance? 103
structure of the atom 12 working voltage 114
total power in parallel circuits 58
D
types of current and voltage 23
types of resistors 35 Decibels 219
voltage divider 50
absolute measurement 225
work 42
Bel 220
C common decibel power ratios 227
common decibel voltage ratios 228
Capacitance 85 common logarithms 221
air spaced variable capacitor 87 dBm 225
analogy of a charging capacitor 106 dBµV 226
capacitive reactance - equation 109 decibel equation for current 224
capacitor charge-discharge circuit 87 decibel equation for power 223
capacitor circuit symbols 86 decibel equation for voltage 224
capacitor in a DC circuit 107 decibels with current and voltage 223
capacitor in an AC circuit 108 logarithms 221
capacitor types 86 losses and gains in a radio system 229
capacitors in series and parallel 93, 110 'S' meter 223
charge "Q" of a capacitor 95
Digital communications 424
charging a capacitor 89
(BPSK) phasor diagram 426
concept of leading current 103
16-QAM 429
construction of a capacitor 85
4096-QAM 430
dielectric constant 91
ADC 444
discharging a capacitor 90
aliases of a signal 442
energy stored in a capacitor 113
aliasing 440
factors determining capacitance 92
amplitude shift keying 425
factors determining capacitive reactance 108
analogue to digital converter 444
permittivity 91
AND gate 447
power in a capacitive circuit 112
anti-aliasing filter 443
reactance in series 110
automatic repeat request (ARQ) 436
reactance versus f and C 112
bandwidth 435
summary of capacitance 115
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