Elenco 75-in-1 Electronic Project Lab - Manual (Page 2)

IV. ELECTRONIC APPLICATION CIRCUITS
44.
Pulse Width Modulation 44
45. Motion Detector 44
46. Burglar Alarm 45
47. Shot in the Dark 45
48. Water Level Alarm 46
49. Photo Alarm 46
50. Timer Buzzer 47
51. Sound Alarm 47
52. Photo Level Alarm 48
53. Four Step Water Level Indicator 48
54. Four Level Photometer 49
55. Electronic Candle 49
56. Motion LED 50
57. Light Dimmer by Pulse Control 50
58. Sound Sensor Timer 51
59. Logic Tester 51
60. Conductivity Tester 52
61. Voltage Detector 53
62. Electronic Coin Toss 53
63. Intermittent Light 54
64. Two-Stage Timer LED 55
65. DC-DC Converter 56
66. Two-Stage Timer Sound 57
67. Sound Level Meter 58
68. DC-DC Converter (Negative) 59
69. Optical Volume 59
70. Quick Draw 60
71. Sawtooth Wave Oscillator 61
72. Marching LEDs 62
73. Electronic Organ 63
74. First Aid Siren 63
75. Falling Bomb Sound 64