Electronic Project Volume - 09

Section A : Construction Projects
S.No
 Products
Page No.
01 Switch Mode Power Supply 11
02 Electronic Advertisement  Display 23
03 Mini T .T  Game 28
04 Electronic Door Lock 32
05 Automatic Traffic Lights Model 35
06 Digital Timer 38
07 Digital Scoreboard 41
08 Mini General Purpose Hex  Keyboard 45
09 Make Yourself This Colour TV - 1 50
10 Make Yourseelf This Colour TV - 2 60
11 Fully Protected Power Supply For DIgital Electronics 69
12 Voisentry 73
13 5 Siren Projects using IC 555 79
14 Make Yourself This Negative Ion Generator 81
15 Four IC 74C926 Based Projects 83
16 Melodious  Digital Timepiece 88
17 10W + 10W Car  Stereo 96
18 Make Yourself This 5 - Band Hi - Fi Reciever 101
19 TV Cum Video Games 108
20 Digi - Teacher 114
21 Audio Spectrum Analyser 116
22 Servo Voltage Stabiliser 124

SECTION - B   CIRCUIT    IDEAS
1 Diley Switch With A Difference 141
2 Electronics Fuel Level Indicator 142
3 Telephone Bug 143
4 Voltage Surge Protector 143
5 Portable Stereo Cassette Tape Amplifier 144
6 Digital Memory For Doorbell 145
7 Electronics Chaser 145
8 Audible Gripscope 146
9 Remote Optical Switch 146
10 Emergency Lamp Cum Charger 147
11 Intruder Alarm 147
12 Convert Your Tape Recorder Into 2 - In - 1 148
13 Simple Emergency Light 148
14 Spark Plug Tester 148
15 Car Overheating Alarm 149
16 Sound Operated Light Switch 150
17 Specker Protection Circut 150
18 Infrared  Remote Control 151
19 Single Wire 2 - Way Intercom 152
20 Musical  Doorbell  Cum Signal Injector 153
21 Simple Electolytic Capacitance Meter 153
22 Electronic Siren 154
23 Electronic Variable Registor 154
24 Ideal Ho - Lo Cut  Off 155
25 Electonics  Piano 157
26 Electronic Combination Lock 157
27 Split Tremolo Unit 158
28 Truth Table Evaluer 159
29 Frequency Doubler Using 555 Timer 160
30 Super Tone Control Add - On 160
31 Touch Sensitive Braking Dog 161
32 Mains Electrostatic Field Detector 162
33 Power Supply Protection 163
34 Multipurpose Multistable 163
35 Multibeeper 165
36 Battery State Indicator 166
37 Timer Without  555 167
38 Single Phase Preventer With Alarm 168
39 Variable Current Source 170
40 Inproved Rain Detector 170
41 Serial Lamp Flasher 171
42 Reflex Action Game 172
43 Motor Boat Sound Simulator 173
44 Improved 555 Timer 173
45 Muting Cum Music Circuit For B & W TV 173
46 Digital Logic Pulser 174
47 Unattached Porch Light /Night Lamp 175
48 Extending The Range Of Thumb Wheel Switch 175
49 Automatic Snoozing Facility For Digital Clock 176
50 IC 555 Drives Stepper Motor 176
51 Seconds Display For Digital Clock 177
52 Capacitance Meter With Digital Display 179
53 Multiway Switch 179
54 Voltage Stepper 180
55 Simple Inexpensive  'De - Thump ' Circuit 180
56 Line Tester 181
57 Motor - Bike Brake Horn 181
58 Cooler Pump Protector Cum Timer 182
59 Simple Waa - Waa Unit 183
60 Electronic Circuit Braker 184
61 Unique Cut - Out For Motorcycle 184
62 Single Gate AFO 184
63 Bicolour LED Sequential Running Light 185
64 Visual  Indicator For Telephones 185
65 Musical Alarm For Digital Clock 186
66 Automatic Water Level Indector /Controller 187
67 In / Out Indicator For Door Chime 188
68 Audio Level Indicator 189
69 Bicolour LED Flasher 189
70 Teletalk Repeater 190
71 Electonic Fuse 190
72 Power Supply Resumption Alarm 191
73 Electonic Lucky Number 191
74 Single Chip Dice 192
75 Electonic Toggle Switch 192
76 Electronic  Balance And Loudness Control 193
77 Freak Motor 193
78 Electronic Magic Box 195
79 A M Radio Transmitter 197
80 Improved Water Level Controller 197