EP130

3) LED Digital Display Circuits 38 CONTENTS 130-in-1 23. Seven-Segment LED Digital Display Circuit 39 24. Basic LED Display 40 Model MX-906 25. Transistor Control Switching of the LED Display 41 26. Transistor, CDS Cell and LED Display Circuit 42 Before We Begin 5 4) A Tour Through Digital Circuits 43 Installing Batteries 5 27. Diode-Transistor Logic AND with LED Display 44 Making Wiring Connections 6 28. DTL OR Circuit with LED Display 45 29. DTL NAND Circuit with LED Display 46 Components 7 30. DTL Exclusive OR Circuit 47 Building Your First Project 11 31. Transistor NOR Circuit with LED Display 48 32. Transistor Flip-Flop Circuit 49 Troubleshooting 12 33. Transistor Toggle Flip-Flop 50 Helpful Suggestions 12 5) More Adventures with Digital Circuits 51 34. Transistor-Transistor Logic Buffer Gate 52 1) Entertainment Circuits 13 35. TTL Inverter Gate 53 1. Electronic Woodpecker 14 36. TTL AND Gate 54 2. The Chirping Bird 15 37. TTL OR Gate 55 3. Electronic Cat 16 38. TTL Exclusive OR Gate 56 4. Sonic Fish Caller 17 39. TTL NOR Gate 57 5. Machine Gun Pulse Oscillator 18 40. TTL Three-Input AND Gate 58 6. Electronic Motorcycle 19 41. TTL AND Enable Circuit 59 7. Two-Tone Patrol Car Siren 20 42. TTL OR Enable Circuit 60 8. Electronic Siren 21 43. TTL NAND Enable Circuit 61 9. Electronic Metronome 22 44. TTL R-S Flip-Flop 62 10. Electronic Grandfather Clock 23 45. Toggle Flip-Flop Circuit Made from NAND Gate 63 11. Light-Controlled Electronic Harp 24 46. TTL Line Selector 64 12. Horror Movie Sound Effects 25 47. TTL Data Selector 65 13. Strobe Light 26 6) The World of Transistor-Transistor Logic 66 14. Rapid LED Display Switching (Persistence of Vision Test) 27 48. TTL Astable Multivibrator 67 2) Basic Semiconductor and Components Circuits 28 49. TTL Tone Generator 68 A Big Change 29 50. Winking LEDs 69 15. Capacitor Discharge / High Voltage Generator 30 51. A One-Shot TTL 70 16. Capacitors in Series and Parallel 31 52. Transistor Timer with TTL 71 17. Resistors in Series and Parallel 32 53. Buzzin LED 72 18. Light Dimmer 33 54. Son of Buzzin LED 73 19. Transistor Switcher 34 55. Set/Reset Buzzer 1 74 20. Transistor Circuit Action 35 56. Set/Reset Buzzer 2 75 21. Sound Amplifier 36 57. Sound Machine 76 22. Flip-Flop Multivibrator with LED Display 37 58. Big Mouth 77 59. Shot in the Dark 787) Application Circuits Based on the Oscillator 79 9) More Adventures with Operational Amplifiers 118 60. Variable R-C Oscillator 80 97. Alternating Current Sound 119 61. Oscillator with Turn-Off Delay 81 98. Light Control Sound Circuit 120 62. Temperature-Sensitive Audio Oscillator 82 99. Sound Alarm Circuit 121 63. Two-Transistor, Directly Connected Oscillator 83 100. Study Timer 122 64. Push/Pull Square Wave Oscillator 84 101. Kitchen Timer 123 65. Pencil Lead Organ 85 102. Three-Input AND Gate Using Operational Amplifier 124 66. LED Strobe Light 86 103. Voice Level Meter 125 67. Electronic Organ 87 104. Power-On Reset Circuit 126 68. Daylight Early Bird 88 105. Delayed Timer 127 69. Intermittent Alarm Generator 89 106. Pulse Frequency Doubler 128 107. White Noise Generator 129 8) Basic Operational Amplifier Circuits 90 108. DC-DC Converter with Operational Amplifier 130 70. Comparator 91 10) Communication Circuits 131 71. Basic Increase in DC Voltage 92 72. Constant-Current Source 93 109. Code Practice Oscillator with Tone Control 132 73. Integrating Circuit 94 110. Crystal Set Radio (Simple-Diode Radio) 133 74. Schmitt Trigger Circuit 95 111. Two-Transistor Radio 134 75. Noninverting Two-Power Supply Amplifier 96 112. Wireless Code Transmitter 135 76. Inverting Two-Power Supply Amplifier 97 113. AM Radio Station 136 77. Noninverting Single-Power Supply Amplifier 98 114. Operational Amplifier Radio 137 78. Two-Power Supply Differential Amplifier 99 11) Testing and Measuring Circuits 138 79. Tone Mixing Amplifier 100 115. Aural Continuity Tester 139 80. Power Amplifier Using Operational Amplifier 101 116. Conductivity Tester 140 81. Voltage Controlled Oscillator Circuit 102 117. Transistor Checker 141 82. Operational Amplifier Buzzer 103 118. Sinewave Audio Oscillator 142 83. Burglar Alarm 104 119. Low Distortion Sinewave Oscillator 143 84. Hand-Operated Sweep Oscillator 105 120. Twin-T Audio Oscillator 144 85. Falling Bomb Sound 106 121. Pulse Oscillator Tone Generator 145 86. Emergency Siren 107 122. Audio Signal Tracer 146 87. First Aid Siren 108 123. Radio Frequency Signal Tracer 147 88. Musical Tempo Generaror 109 124. Square Wave Audio Oscillator 148 89. Operational Amplifier Winking LED 110 125. Sawtooth Wave Oscillator 149 90. LED Flashing Light 111 126. Rain Detector 150 91. Two-LED Winker 112 127. Water Level Buzzer with Operational Amplifier 151 92. One Shot Light 113 128. Metal Detector 152 93. LED Initials 114 129. Water Level Alarm 153 94. Wake Up Siren 115 130. Three-Step Water Level Indicator 154 95. Voice-Activated LED 116 96. Logic Tester 117 Index 155 Parts List 157