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Measuring current and voltage Network F Same as network E. Resistance R F = 16 k. Network G Two equal parallel resistors, each of 10 k. Resistance R G is therefore 5 k. Figure 3.3 shows further simplification. Figure 3.3 resistances The network further simplified (network H) into two unequal parallel Network H Two unequal, parallel resistors. Resistance R H is therefore given by: 57
Starting electronics Figure 3.4 shows a further simplification. Figure 3.4 The network simplified into a string of series resistances (network I) Network I Resistance R I is found by adding resistances of resistors R 1 , R H and R G . Resistance R I is therefore 22k02. Figure 3.5 shows the next stage of simplification with two unequal parallel resistors. The whole network’s equivalent resistance is therefore given by: Now, from Ohm’s law we may calculate the current I, flowing from the battery, using the expression: 58
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Starting Electronics i
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Starting Electronics Keith Brindley
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Contents Contents Preface vi 1. The
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The very first steps 1 The very fir
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The very first steps potential rewa
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The very first steps Photo 1.2 tool
Page 14 and 15: The very first steps that electrici
Page 16 and 17: The very first steps Going back to
Page 18 and 19: The very first steps tially exist.
Page 20 and 21: The very first steps by a scientist
Page 22 and 23: The very first steps Hint: Ohm’s
Page 24 and 25: The very first steps Electronic com
Page 26 and 27: The very first steps Larger values
Page 28 and 29: The very first steps Time out That
Page 30 and 31: On the boards 2 On the boards In th
Page 32 and 33: On the boards If you are following
Page 34 and 35: On the boards Hint: The theoretical
Page 36 and 37: On the boards Photo 2.2 Inside brea
Page 38 and 39: On the boards Down the edges of the
Page 40 and 41: On the boards Hint: The multi-meter
Page 42 and 43: On the boards of leads should be su
Page 44 and 45: On the boards it gets older and sta
Page 46 and 47: On the boards Hint: The bands group
Page 48 and 49: On the boards In practice, you migh
Page 50 and 51: On the boards called just ohmmeter)
Page 52 and 53: On the boards ends. We say resistor
Page 54 and 55: On the boards we would get: and thi
Page 56 and 57: On the boards Figure 2.9 A comparat
Page 58 and 59: Measuring current and voltage 3 Mea
Page 60 and 61: Measuring current and voltage forme
Page 62 and 63: Measuring current and voltage Netwo
Page 66 and 67: Measuring current and voltage Did y
Page 68 and 69: Measuring current and voltage Figur
Page 72 and 73: Practically there Measuring current
Page 74 and 75: Measuring current and voltage Take
Page 78 and 79: Measuring current and voltage Take
Page 82 and 83: Measuring current and voltage Hint:
Page 84 and 85: Capacitors 4 Capacitors You need a
Page 86 and 87: Capacitors Capacitors We’re going
Page 88 and 89: Capacitors In our experiments in th
Page 90 and 91: Capacitors Figure 4.4 A simple resi
Page 92 and 93: Capacitors Time (seconds) 5 10 15 2
Page 94 and 95: Capacitors Time (seconds) 5 10 15 2
Page 96 and 97: Capacitors In a capacitor circuit l
Page 98 and 99: Capacitors Figure 4.11 An experimen
Page 100 and 101: Capacitors Time (seconds) Voltage (
Page 102 and 103: Capacitors plates of the capacitor
Page 104 and 105: Capacitors where ε is the permitti
Page 106 and 107: ICs oscillators and filters 5 ICs,
Page 108 and 109: ICs oscillators and filters Photo 5
Page 110 and 111: ICs oscillators and filters We’ve
Page 112 and 113: ICs oscillators and filters an osci
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ICs oscillators and filters (a) (b)
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ICs oscillators and filters Ouch, t
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ICs oscillators and filters output
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ICs oscillators and filters Value o
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ICs oscillators and filters voltage
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ICs oscillators and filters Value o
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ICs oscillators and filters Figure
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ICs oscillators and filters simple
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Diodes I 6 Diodes I We’re going t
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Diodes I Photo 6.1 A horizontal pre
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Diodes I Now, with a resistance of
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Diodes I here. We needn’t know an
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Diodes I Figure 6.9 The breadboard
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Diodes I but we never said it was a
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Diodes I Current (mA) Voltage (V) 0
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Diodes I voltages, reverse currents
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Diodes I battery voltage of 9 V sim
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Diodes I Figure 6.17 The circuit, w
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Diodes I Figure 6.19 My results fro
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Diodes II 7 Diodes II In the last c
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Diodes II the same experiment we di
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Diodes II We need to draw diode cha
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Diodes II Generally, diodes don’t
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Diodes II Diode voltage (VD) Resist
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Diodes II Diode circuits We’re no
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Diodes II Figure 7.9 Waveforms show
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Diodes II Filter tips Although we
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Diodes II We’ve already seen a de
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Diodes II as that from a 230 V a.c.
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Diodes II Figure 7.19 The same circ
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Transistors 8 Transistors In previo
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Transistors Figure 8.1 How to recog
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Transistors Black meter lead Red me
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Transistors Well, as mentioned earl
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Transistors Figure 8.8 A breadboard
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Transistors In effect, the transist
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Transistors Figure 8.10 transistors
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Transistors Hint: Yes, that’s rig
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Transistors These two operational m
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Analogue integrated circuits 9 Anal
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Analogue integrated circuits circui
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Analogue integrated circuits Figure
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Building on blocs Analogue integrat
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Analogue integrated circuits As the
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Analogue integrated circuits circui
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Analogue integrated circuits an app
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Digital integrated circuits I 10 Di
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Digital integrated circuits I Logic
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Digital integrated circuits I If we
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Digital integrated circuits I Figur
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Digital integrated circuits I It’
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Digital integrated circuits I The t
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Digital integrated circuits I Trans
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Digital integrated circuits I going
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Digital integrated circuits I OR an
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Digital integrated circuits I For t
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Digital integrated circuits II 11 D
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Digital integrated circuits II A se
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Shutting the ’stable gate Digital
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Digital integrated circuits II gate
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Digital integrated circuits II In o
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Digital integrated circuits II Figu
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Digital integrated circuits II Swit
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Digital integrated circuits II The
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Open the black box Digital integrat
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Digital integrated circuits II Ther
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Glossary Glossary 180 ° out-of-pha
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Glossary bode plots method of showi
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Glossary decibels logarithmic units
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Glossary integrated circuit a semic
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Glossary peak voltage the voltage m
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Glossary squarewave a signal which
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Glossary Components used Resistors
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Glossary Index A ampere, 9 AND gate
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