Electronic Project Volume - 16

Section A : Construction Projects
S.No
 Products
Page No.
01 Cardiac Oracle 03
02 99.99 Second Stop - Clock 05
03 Two-Band Radio Based On ZN414 08
04 Traffic Light Controller Using 8085 Microprocessor 11
05 Audio Histogram 15
06 Personal Reminder System 18
07 Voice Horns For Vehicles 22
08 Programmable Digital Clock 25
09 10-Band Audio Spectrum Analyser 30
10 RF Power Signal Generator 35
11 Auto Shut Ni-Cd Battery Charger 42
12 Multipurpose Digital Counter 45
13 Versatile On/Off Timer Using Single Clock IC 48
14 Digital IC Tester 52
15 PC Based Visitor Counter 55
16 Pocket FM Receive 57
17 Music Operated Electronic Novelty 60
18 PC Based Token Number Displayer 62
19 Quiz Display 66
20 Make Your Own Mobile Robot 69
21 Variable Frequency Active High-Pass Filter 77
22 Budget Digital Oscilloscope 79
23 Active Crossover Network 84

SECTION - B   CIRCUIT    IDEAS
1 Electronic Gambler 91
2 Open-Loop Burgler Alarm 92
3 Two-to-Channel VOM 92
4 Wiper Delay 93
5 Moving Holes 94
6 Toilet Busy Indicator 95
7 Single Phase Preventer 96
8 Sentinel Of The Maintenance-Free Battery 97
9 Short Duration Night Lamp 99
10 Musical Doorbell With Memory 100
11 A Novel CMOS Electronic Dice 101
12 Super Simple Triangular-To-Sinewave enerator 102
13 Digital Fan Regulator 103
14 Telephone Extension Ringer 104
15 Voltage Variable Duty Cycle 105
16 Digital Morse Keyer 105
17 Logic High-Low Indicator 106
18 Simple Electronic Code Lock 107
19 Novel Musical Doorbell 107
20 Smoke Alarm 108
21 Multiple Transistor Tester 109
22 Tempreture Display 110
23 Prevent Dry Run Of Your Pump 110
24 Voltaghe Monitor 111
25 Two Tone Continuity Tester 112
26 Automatic Colour Chaning Running Lights 113
27 100-Segment Light Chaser 114
28 Super Electronic Pendulum 115
29 Bi-Colour Disco Light 116
30 Electronic Hand Dryer 116
31 Reset Switch For PC 117
32 Sound Level Meter 118
33 Schmitt Trigger Inverter 118
34 Frequency Generator 119
35 Voltage To Frequency Converter 119
36 Stereo Cassette Player 120
37 Sound nLevel Indicator For Stereo Systems 121
38 Dual Mode Emergency Light 122
39 Automatic Porch Light 122
40 Poer-On Delay 123
41 Microprocessor-Based DC Motor Speed Control 124
42 Simple Telephone Call Recorder 125
43 Waer Heater Controller 126
44 Single-Chip Logic Probe 126
45 Musicall Doorbell 127
46 Roulette Game 127
47 STD/ISD/PCO Call PreventerSingle - Tune AC Door-Bell 128
48 Single - Tune AC Door - Bell 129
49 Electronic Dice 130
50 Power Failure Indicator 131
51 Cooling Failure Alarm 131
52 Multipurpose Continuity Cum Capacitor Tester 132
53 Programmmable Digital Controller For Lights 132
54 Low-Frequency Crystal Checker 133
55 Single - Gate Square Wave Generator 134
56 Mike Amplifier With Visual Display 134
57 Ultra Compact Stereo Headphone Driver 135
58 Mimiature Ham Transmitter 136
59 Electronic Sruthy 137
60 Transformerless Overload Protector With Relay 138
61 Soil Moisture Control Unit 138
62 Millisecond Digital Stop-Watch 139
63 Intelligent Switch 140
64 Chasing Water Level Indicator 141
65 Musical Kaleidoscope 141
66 Simple 1A Three Rail Power Supply 143
67 Interruption Timer 143
68 Innovative Electrical Systemm For Bikes 144
69 Coil-Less Vertical Bar Generator 145
70 One to 16-Line Decoder 145
71 Automatic Phase Selecttor 146
72 3+5 Band Graphic Equaliser 147
73 Reducing Power Drain In Relays 148
74 Direction Pointer 149