Electronic Project Volume - 13

Section A : Construction Projects
S.No
 Products
Page No.
01 Make Your Own Audio Cassette Copier 01
02 Make Yourself This Special Two - Way Intercom 05
03 Full Fratured Touch Control Programmable Power Supply 08
04 Hit The Target An Electronic Game 12
05 Stereo Spectrograph 15
06 Digital Time Switch 20
07 Digital Frequency  Counter 26
08 Fire Sensing Systems 30
09 Spectacular Spectra 33
10 Clap - Operated Remote Control For Fans 38
11 8W +8W Stereo Amplifier Module 41
12 Make Yourself Automatic Music Search System 45
13 Digital Volume Control 48
14 Cook Timer 52
15 Veriable Speed Multi - Output Running Mode LED Display 55
16 CMOS Packetable Timekeeper 58
17 Electreonic Number Shooting Game 61
18 CMOS Digital Clock With On - Off Timer 66
19 70 / 40 Watts Hi - Fi Amplifier 71
20 The Universal Timer 75
21 Automatic Voltage Stabiliser 81
22 Digital Car Lock With Alarm 84
23 AM / FM Radio Receiver Using BEL 7220 86
24 Electronic Switch  Starter 90

SECTION - B   CIRCUIT    IDEAS
1 Stereo Balance Indicator 93
2 Versatile Auto - Cut Off Unit 94
3 Staircase Light Switch 96
4 Wireless Recording 98
5 A Versatile  Decibel Meter 98
6 Sound Operaterd Musical Bell 100
7 Fuzz Effect Box For Gutarists 101
8 Vedio Distribution Amplifier 102
9 Low - Cost Musical Horn 102
10 Ten Chennel Sequential Lighting For Cars 103
11 Convertion Of Dmm Into Frequency Counter 104
12 Auto Power Off For Motor Pumps 105
13 Beeper Cum Visual Indicator 106
14 Electronic Washing Machine Control 107
15 Trangular Waveform Generator 109
16 Auto Changeover From Genset To Mains Supply 110
17 Transformer Test Circuit To Overcome Line Voltage Variation 110
18 Automatic Gate Light 112
19 Pocket Radio Using LA4510 112
20 Telephone  Melody  Ringer 113
21 Dynamic Display 114
22 Steam Whistle 115
23 Programmable Timer 116
24 LED Stop Watch 117
25 Lie  Detector 117
26 Temperature Controlled Soldering  Iron Station 119
27 Mini Emergency Light 120
28 Automatic Time Indicator For Telephone 121
29 Wind Sound Generator 122
30 Automatic Cut -  Off Power Supply 122
31 Battery Charger With Overcharge And Deep - Discharge Protection 123
32 Electronic Ballast For Tubelight 125
33 Compressor / Expender Unit  (Compander ) 126
34 Adjustable Bipolar Voltage Regulator 127
35 Hex To Binary Encorder 128
36 Electronic Siren 129
37 Self Switching - Off Power Supply 129
38 Sound Operated Timer 130
39 Telephone Amplifier Cum Broadcaster 131
40 Quiz Display With Seven Segmemt Indicator 132
41 Electronic Staircase Switch 133
42 Fully Automatic Induction Motor Strater 133
43 Temperature Controlled Oscillator 134
44 Power Back Up  For Digital Clocks 135
45 Analogue Frequency Meter With Over - Range Indicator 135
46 Versatile Stroboscope 136
47 In - Circuit Ohm Meter  ( Ohmmeter For Electronics Circuit ) 137
48 Priority Lamp System 139
49 Miniature IC Organ 140
50 Quartz Watch Tester 140
51 Automatic Control For Sitout Lights 141
52 Simple Power Supply Resumption Alarm 142
53 1 / 86400 Hz  Generator 143
54 Programmable Frequency Multiplier Using PLL565 143
55 Auto - Off For Cassette Players 144
56 Electronic Changer 145
57 Transistorised Warning Alarm 146
58 Electronic Number Scoring Game 146
59 Rain Sound Generator 148
60 Double - Tune Car Reverse Horn 149
61 Traffic - Light Controller 149
62 Sophisticated Ni - Cd Charger 150
63 Three Bit Flash Analogue To Digital  Converter 151
64 Programmable Digital Timer 152
65 Multi Pattern Running Light 154
66 Eight - Sound Generator 155
67 A Novel Display 155
68 Audio Running Lights 157
69 Hearing Aid 157
70 Fuel Level Drop Indicator 158
71 Automatic Suction Tank Motor Controller 159
72 12 Hindi Song Tunes Producer 159
73 Simple Frequency Meter 160
74 100 Rung Exclusive Counter 160
75 Inexpensive Guitar Amplifier 162
76 Video Transmitter 162
77 Wireless Code Practice Oscillator 163
78 Light And Touch - Operated Music Bell 163
79 Electronic Fuse 164
80 Multisound Buzzer 165
81 Crystal Controlled Inverter 165