Page 13 - Teach Yourself Electricity and Electronics

Contents xiii

Power transmission 315
Series resonance 318
Parallel resonance 319
Calculating resonant frequency 319
Resonant devices 321
Quiz 323

18 Transformers and impedance matching 327
Principle of the transformer 327
Turns ratio 328
Transformer cores 329
Transformer geometry 330
The autotransformer 333
Power transformers 334
Audio-frequency transformers 336
Isolation transformers 336
Impedance-transfer ratio 338
Radio-frequency transformers 339
What about reactance? 341
Quiz 342

Test: Part 2 346

Part 3 Basic electronics
19 Introduction to semiconductors 359
The semiconductor revolution 359
Semiconductor materials 360
Doping 362
Majority and minority charge carriers 362
Electron flow 362
Hole flow 363
Behavior of a P-N junction 363
How the junction works 364
Junction capacitance 366
Avalanche effect 366
Quiz 367
20 Some uses of diodes 370
Rectification 370
Detection 371
Frequency multiplication 372
Mixing 373
Switching 374
Voltage regulation 374
Amplitude limiting 374