Tab Electronics Guide to Understanding Electricity ... - Sciences Club

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Linear Electronic Circuits 273 TABLE 8-2 Parts List for 50-Watt Professional-Quality Audio Amplifier Part Designation Definition Description R1, R9, R10 Resistor 10 Kohm, 1 2 watt R2, R3, R6, R7, R12, R13, R14 Resistor 100 ohm, 1 2 watt R4 Resistor 180 ohm, 1 2 watt R5 Resistor 22 Kohm, 1 2 watt R8 Resistor 330 ohm, 1 2 watt R11 Resistor 33 ohm, 1 2 watt R15, R18 Resistor 12 Kohm, 1 2 watt R16, R17, R21 Resistor 150 ohm, 1 2 watt R19, R20 Resistor 270 ohm, 1 2 watt R22, R23 Resistor 0.22 ohm, 5 watt R24, R25 Resistor 8.2 ohm, 5 watt C1, C2 Tantalum capacitor 22 f at 16 WVDC C3 Ceramic capacitor 68 pF C4, C5 Electrolytic capacitor 100 F at 50 WVDC C6 Electrolytic capacitor 220 F at 25 WVDC C7 Ceramic capacitor 150 pF C8 Electrolytic capacitor 10 F at 16 WVDC C9 Mylar capacitor 1 F at 100 volts C10, C11, C12 Mylar capacitor 0.1 F at 100 volts D1, D2, D3 Diode 1N4148 D4, D5 Diode 1N5060 L1 Inductor 1 H (see text) Q1, Q2, Q3, Q4, Q10, Q11, Q13 PNP transistor 2N5401 Q5, Q6, Q7, Q8, Q12 NPN transistor 2N5551 Q9, Q14 NPN transistor 2SD669 Q15 PNP transistor 2SB649 Q16 NPN transistor MJ15003 Q17 PNP transistor MJ15004 P1 Trim potentiometer 1 Kohm (horizontal mount) F1, F2 Fuses 3-amp GMA (Not illustrated) Fuse clips GMA type (see text) (Not illustrated) HeatsinkDouble T0-3 type (see text) (Not illustrated) HeatsinkSmall TO-220 type (see text) Miscellaneous Transistor insulators, PC board, mounting hardware
274 Chapter Eight with the manufacturer’s thermal resistance rating, the specified rating is 0.7°C/watt). However, if this is all confusing to you, don’t worry about it. If you can find a heatsink that is close to the same dimensions and is designed for the mounting of two TO-3 devices, it should suffice very well. A few examples of larger heatsink styles are provided in Fig. 8-15; the square-shaped Wakefield type in the forefront of the illustration is a good choice for this amplifier project. If the heatsink is manufactured so that it can be mounted vertically, there is space provided for mounting it directly to the PC board. If not, you can run longer connection wires out to an externally mounted heatsink (the length of the transistor connection wiring in this design is not critical). Q9 should be mounted in close proximity to the output transistors on the same heatsink so that it will thermally track the temperature of the output transistors. The connection wiring to Q16, Q17, and Q9 can be made with ordinary 20- to 22-AWG stranded, insulated hookup wire. Be sure to double-check the accuracy of your wiring according to the silkscreen diagrams provided—it’s very easy to get the transistor leads confused on the TO-3 devices. Testing, Setup, and Applications of the Professional-Quality Audio Power Amplifier Once you have finished the construction of the amplifier, I suggest that you use the schematic (Fig. 8-11) and accompanying illustrations (Figs. 8-12 to 8-14) to recheck and then double-recheck your work. The amplifier Figure 8-15 Some examples of larger heatsink styles.
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TAB ELECTRONICS GUIDE TO UNDERSTAND
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TAB Electronics Guide to Understand
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To my Lord and Savior, Jesus Christ
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CONTENTS Preface Acknowledgments xv
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Contents ix Chapter 5. Capacitance
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Contents xi The Triac 287 Unijuncti
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Contents xiii Low-Pass Filters 380
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PREFACE When I was 10 years old, I
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ACKNOWLEDGMENTS I would like to tha
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1 CHAPTER Getting Started As the ol
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Getting Started 3 tiny parts that t
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Getting Started 5 Obtaining the Inf
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Getting Started 7 to get them! A li
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Getting Started 9 The Workbench A g
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Getting Started 11 potential destru
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Getting Started 13 be ideal for sta
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Getting Started 15 Figure 1-5 A ver
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Getting Started 17 should look like
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Getting Started 19 fascinating hobb
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Getting Started 21 zines (often cal
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Getting Started 23 capacitors are p
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Getting Started 25 mail-order surpl
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2 CHAPTER Basic Electrical Concepts
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Basic Electrical Concepts 29 types
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Basic Electrical Concepts 31 recogn
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Basic Electrical Concepts 33 Figure
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Basic Electrical Concepts 39 the co
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Basic Electrical Concepts 41 Voltag
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Basic Electrical Concepts 43 potent
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Basic Electrical Concepts 45 relati
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Basic Electrical Concepts Figure 2-
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Basic Electrical Concepts 49 and th
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Basic Electrical Concepts 51 vide t
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Basic Electrical Concepts 53 G (R3)
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Basic Electrical Concepts 55 presen
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Basic Electrical Concepts Figure 2-
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Basic Electrical Concepts power dis
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Basic Electrical Concepts 61 This i
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Basic Electrical Concepts relate to
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Basic Electrical Concepts 67 Exerci
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Basic Electrical Concepts that the
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Basic Electrical Concepts 73 nonsta
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Basic Electrical Concepts 75 the re
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Basic Electrical Concepts 79 Exerci
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3 CHAPTER The Transformer and AC Po
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The Transformer and AC Power 83 whi
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The Transformer and AC Power 85 Thi
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The Transformer and AC Power 87 Pea
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The Transformer and AC Power 89 cau
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The Transformer and AC Power consta
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The Transformer and AC Power 93 vir
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The Transformer and AC Power 95 fie
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The Transformer and AC Power 97 P
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The Transformer and AC Power 99 the
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The Transformer and AC Power 101 th
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The Transformer and AC Power 103 ho
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The Transformer and AC Power 105 Fi
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The Transformer and AC Power 107 ed
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The Transformer and AC Power 109 pr
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The Transformer and AC Power 111 pl
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The Transformer and AC Power 113 Tu
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4 CHAPTER Rectification Earlier in
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Rectification 117 rus of rattling a
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Rectification 119 Figure 4-3 Diode
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Rectification 121 Figure 4-4 Half-w
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Rectification 123 Figure 4-7 Curren
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Rectification 125 Figure 4-8 Curren
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Rectification 127 Figure 4-12 Redra
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Rectification 129 Be aware that som
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Rectification 131 Hopefully, F1 did
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5 CHAPTER Capacitance A capacitor i
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Capacitance 135 Ceramic is the most
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Capacitance 137 charged, when the s
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Capacitance 139 In reference to cap
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+ Capacitance 141 Figure 5-3 A DC f
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+ Capacitance 143 Figure 5-4 Full-w
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Capacitance 145 from the bridge rec
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Capacitance but it is usually prude
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Capacitance 149 Figure 5-7 Approxim
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Capacitance 151 Many of the more ex
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6 CHAPTER Transistors Before gettin
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Transistors 155 Telephone Laborator
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Transistors 157 higher positive pot
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Transistors 159 reference, the emit
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Transistors 161 Adding Some New Con
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+ Transistors 163 Figure 6-3 Practi
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Transistors 165 is typically a high
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+ Transistors Figure 6-5 illustrate
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Transistors 169 Figure 6-6 Demonstr
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Transistors 171 Figure 6-7b PNP tra
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Transistors (which is the emitter v
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Transistors 175 The transistor circ
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Transistors 177 Again referring to
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Transistors 179 will be very stable
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Transistors 181 Imagine you were go
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Transistors transfer of a voltage s
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Transistors may recall from Chapter
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Transistors 187 base current flow p
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Transistors 189 is connected to its
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Transistors 191 soon as some amount
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Transistors 193 As you have seen, t
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Transistors 195 It might be a littl
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Transistors 197 Figure 6-12 Suggest
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Transistors 199 If a load is placed
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7 CHAPTER Special-Purpose Diodes an
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Special-Purpose Diodes and Optoelec
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Page 258 and 259: Linear Electronic Circuits 239 Dist
Page 262 and 263: Linear Electronic Circuits 243 To u
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Page 270 and 271: Linear Electronic Circuits 251 all
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Page 276 and 277: Linear Electronic Circuits 257 tion
Page 278 and 279: Linear Electronic Circuits 259 CAD
Page 282 and 283: Linear Electronic Circuits 263 Cons
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Page 288 and 289: Linear Electronic Circuits 269 Note
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Page 302 and 303: 9 CHAPTER Power Control The term th
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Page 320 and 321: 10 CHAPTER Field-Effect Transistors
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Page 336 and 337: 11 CHAPTER Batteries Because many h
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Batteries 323 RS1 is set to the pos
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12 CHAPTER Integrated Circuits The
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Integrated Circuits 327 mon-mode re
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Integrated Circuits 329 not be depe
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Integrated Circuits 331 Improvement
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Integrated Circuits 333 Figure 12-3
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Integrated Circuits 335 Figure 12-6
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Integrated Circuits 337 other filte
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Integrated Circuits 339 This circui
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Integrated Circuits 341 connected d
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13 CHAPTER Digital Electronics Digi
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Digital Electronics 345 The binary
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Digital Electronics 347 occur on th
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Digital Electronics 349 Multivibrat
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Digital Electronics 351 F-F1 will t
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Digital Electronics 353 Figure 13-6
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Digital Electronics 355 Summary Man
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Digital Electronics 357 IC2 is a CM
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Digital Electronics 359 Figure 13-1
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14 CHAPTER Computers In today’s w
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Computers 363 Figure 14-1 Block dia
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Computers 365 memory. Then, during
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Computers 367 When an I/O port “s
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Computers 369 with real analysis eq
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15 CHAPTER More About Capacitors an
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More About Capacitors and Inductors
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16 CHAPTER Radio and Television Rad
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Radio and Television 407 Figure 16-
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Radio and Television 409 length. At
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Radio and Television 411 the RF spe
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Radio and Television 413 tude varia
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Radio and Television 415 Figure 16-
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APPENDIX A SYMBOLS AND EQUATIONS Th
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Symbols and Equations 419 IF Interm
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Symbols and Equations 421 rcvr Rece
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Symbols and Equations 423 Formulas
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Symbols and Equations 425 I 20 log
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Symbols and Equations Meter formula
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Symbols and Equations 429 Resistanc
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Symbols and Equations 431 Temperatu
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434 Appendix B Electronic Kit Suppl
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436 Appendix B Marlin P. Jones & As
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440 Appendix C Figure C-1 (cont.) 1
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444 Index Amplifiers, audio (Cont.)
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446 Index Capacitance and capacitor
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448 Index Digital ICs, 326 Digital
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450 Index Filters (Cont.): Percussi
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452 Index Lab for electronics work,
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454 Index Photographic method for p
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456 Index Resist ink in printed cir
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458 Index Transformers (Cont.): Iso
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ABOUT THE AUTHOR G. Randy Slone is
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