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Digital integrated circuits I OR and NOT gates combined In the same vein as the last circuit, Figure 10.38 shows a circuit combining different types of logic gates — this time an OR gate whose inputs have been inverted by NOT gates. The outputs of both NOT gates (hence, also, the inputs of the OR gate) are measured with two LEDs, while the OR gate output is measured with the third LED. Figure 10.38 A circuit to investigate OR and NOT gates Figure 10.39 shows a breadboard for the circuit for you to follow. Figure 10.40 shows an incomplete truth table for you to record your results of the experiment, while Figure 10.41 is a complete truth table, which — if everything goes as it should — your results will be identical to. If you’ve already been thinking about this, you’ll no doubt already have been flicking back through this book’s pages to locate which truth table Figure 10.40 and 10.41 are identical to. If not, or if you simply haven’t found it, it’s the truth table in Figure 10.29 — which is that of a NAND gate. 233
Starting electronics Figure 10.39 A possible breadboard layout for the circuit of Figure 10.38 Figure 10.40 An incomplete truth table to record your experimental results Figure 10.41 Complete truth table for the circuit of Figure 10.38 234
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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
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The very first steps that electrici
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The very first steps Going back to
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The very first steps tially exist.
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The very first steps by a scientist
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The very first steps Hint: Ohm’s
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The very first steps Electronic com
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The very first steps Larger values
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The very first steps Time out That
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On the boards 2 On the boards In th
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On the boards If you are following
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On the boards Hint: The theoretical
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On the boards Photo 2.2 Inside brea
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On the boards Down the edges of the
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On the boards Hint: The multi-meter
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On the boards of leads should be su
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On the boards it gets older and sta
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On the boards Hint: The bands group
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On the boards In practice, you migh
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On the boards called just ohmmeter)
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On the boards ends. We say resistor
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On the boards we would get: and thi
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On the boards Figure 2.9 A comparat
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Measuring current and voltage 3 Mea
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Measuring current and voltage forme
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Measuring current and voltage Netwo
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Measuring current and voltage Netwo
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Measuring current and voltage Did y
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Measuring current and voltage Figur
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Practically there Measuring current
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Measuring current and voltage Take
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Measuring current and voltage Take
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Measuring current and voltage Hint:
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Capacitors 4 Capacitors You need a
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Capacitors Capacitors We’re going
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Capacitors In our experiments in th
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Capacitors Figure 4.4 A simple resi
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Capacitors Time (seconds) 5 10 15 2
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Capacitors Time (seconds) 5 10 15 2
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Capacitors In a capacitor circuit l
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Capacitors Figure 4.11 An experimen
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Capacitors Time (seconds) Voltage (
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Capacitors plates of the capacitor
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Capacitors where ε is the permitti
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ICs oscillators and filters 5 ICs,
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ICs oscillators and filters Photo 5
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ICs oscillators and filters We’ve
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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
Page 190 and 191: Transistors These two operational m
Page 192 and 193: Analogue integrated circuits 9 Anal
Page 194 and 195: Analogue integrated circuits circui
Page 196 and 197: Analogue integrated circuits Figure
Page 198 and 199: Building on blocs Analogue integrat
Page 202 and 203: Analogue integrated circuits As the
Page 206 and 207: Analogue integrated circuits circui
Page 212 and 213: Analogue integrated circuits an app
Page 214 and 215: Digital integrated circuits I 10 Di
Page 216 and 217: Digital integrated circuits I Logic
Page 218 and 219: Digital integrated circuits I If we
Page 220 and 221: Digital integrated circuits I Figur
Page 222 and 223: Digital integrated circuits I It’
Page 228 and 229: Digital integrated circuits I The t
Page 230 and 231: Digital integrated circuits I Trans
Page 238 and 239: Digital integrated circuits I going
Page 242 and 243: Digital integrated circuits I For t
Page 248 and 249: Digital integrated circuits II 11 D
Page 250 and 251: Digital integrated circuits II A se
Page 252 and 253: Shutting the ’stable gate Digital
Page 254 and 255: Digital integrated circuits II gate
Page 256 and 257: Digital integrated circuits II In o
Page 258 and 259: Digital integrated circuits II Figu
Page 260 and 261: Digital integrated circuits II Swit
Page 262 and 263: Digital integrated circuits II The
Page 268 and 269: Open the black box Digital integrat
Page 272 and 273: Digital integrated circuits II Ther
Page 274 and 275: Glossary Glossary 180 ° out-of-pha
Page 276 and 277: Glossary bode plots method of showi
Page 278 and 279: Glossary decibels logarithmic units
Page 280 and 281: Glossary integrated circuit a semic
Page 282 and 283: Glossary peak voltage the voltage m
Page 284 and 285: Glossary squarewave a signal which
Page 286 and 287: Glossary Components used Resistors
Page 288 and 289: Glossary Index A ampere, 9 AND gate
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