Electronic devices on discrete components for industrial and power engineering

Is it possible to design and make automatic devices for industrial and power engineering without microcircuits and microprocessors and without complex power supplies?

Electronic Devices on Discrete Components for Industrial and Power Engineering answers the question above with a resounding "Yes!" by describing ten original automatic devices based exclusively on modern discrete components. The book reveals that devices based on high-voltage transistors and thyristors as well as miniature vacuum and high power gas-filled reed switches are actually much simpler to implement and more reliable than traditional devices. By identifying elementary functional modules and the basic working principles of semi-conductor devices, the text allows for the construction of complete automatic devices. It also contains an extensive reference section that includes information on modern high-voltage bipolar, FET and IGBT transistors, thyristors and triacs, as well as reed switches.

1 Solid-State Electronics Elements	p. 1
1.1 Semiconducting Materials and p-n-Junction	p. 1
1.2 The Transistor's Principle	p. 7
1.3 Some Transistor Kinds	p. 9
1.4 Bipolar Transistor General Modes	p. 18
1.5 Transistor Devices in Switching Mode	p. 24
1.6 Thyristors	p. 31
1.7 Control of Thyristors on Direct Current	p. 39
1.8 Control of Thyristors on Alternating Current	p. 43
1.9 Diac, Triac, Quadrac	p. 44
2 Reed Switches	p. 49
2.1 What Is It?	p. 49
2.2 Polarized and Memory Reed Switches	p. 54
2.3 Power Reed Switches	p. 60
3 High-Voltage Reed Relays	p. 63
3.1 HV Reed Relays for Low Current DC Circuits	p. 63
3.2 HV Reed Relays for High Current Applications	p. 71
3.3 Relay Responding to the Current Changing Rate	p. 74
3.4 Differential HV Reed Relay	p. 75
3.5 Reed-Based Devices for Current Measurement in High Potential Circuits	p. 76
3.6 Spark-Arresting Circuits for Reed Relays	p. 78
4 Elementary Function Modules	p. 83
4.1 Switching Devices	p. 83
4.2 Generators, Multivibrators, Pulse-Pairs	p. 97
4.3 Timers	p. 104
4.4 Logic Elements	p. 107
4.5 Overcurrent and Overvoltage Protection Modules	p. 111
4.6 Voltage Stabilizers and Regulators	p. 117
4.7 Other Functional Modules for Automatic Devices	p. 124
5 Simple Protective Relays on Discrete Components	p. 131
5.1 Universal Overcurrent Protective Relay	p. 131
5.2 Simple Very High-Speed Overcurrent Protection Relay	p. 140
5.3 The New Generation Universal Purpose Hybrid Reed-Solid-State Protective Relays	p. 154
5.4 Automatic High-Voltage Circuit Breakers	p. 163
5.5 High-Speed Voltage Unbalance Relay	p. 167
5.6 Impulse Action Protective Relay	p. 169
6 Improvement of Microprocessor-Based Protective Relays	p. 173
6.1 Power Supply of Microprocessor-Based Protective Relays at Emergency Mode	p. 173
6.2 Increasing Reliability of Trip Contacts in Microprocessor-Based Protective Relays	p. 181
7 Automatic Devices for Power Engineering	p. 197
7.1 Arc Protection Device for Switchboards 6 - 24 kV	p. 197
7.2 Automatic-Reset Short Circuit Indicator for 6 - 24 kV Bus Bars	p. 199
7.3 High-Current Pulse Transducer for Metal-Oxide Surge Arrester	p. 201
7.4 Current Transformers' Protection from Secondary Circuit Disconnection	p. 207
7.5 A Single-Phase Short Circuit Indicator for Internal HV Cables in Medium Voltage Substation	p. 211
7.6 Ground Circuit Fault Indicator for Underground HV Cable Network	p. 214
7.7 HV Indicators for Switchgears and Switchboards	p. 218
Appendix A1 High-Speed Miniature Reed Switches	p. 225
Appendix A2 High-Voltage Vacuum Reed Switches	p. 233
Appendix A3 Mercury Wetted Reed Switches	p. 245
Appendix A4 Industrial Dry Reed Switches	p. 251
Appendix B1 High-Voltage Bipolar Transistors	p. 281
Appendix B2 High-Voltage Darlington Transistors	p. 333
Appendix B3 High-Voltage FET Transistors	p. 341
Appendix B4 High-Voltage IGBT Transistors	p. 351
Appendix C High-Voltage Thyristors	p. 367
Appendix D High-Voltage Triacs	p. 389
Appendix E Bilateral Voltage-Trigger Switches	p. 401
Index	p. 415

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