Electronic Project Volume - 04

Section A : Construction Projects
S.No
 Products
Page No.
01 100 Watt Frequency Controlled Inverter 09
02 Make Yourself This Sanguinoscope 15
03 Digital Combination lock for Cars 18
04 Electronics 'luck Tester' 25
05 Single Chip  Latch - Up Alarm 29
06 Electronics  Siren For Civil Defence  And time Indicator 31
07 Remote  Indicating Electronic  Weighing Machine 33
08 The 'First ' And  'Second  Generation '   Office Call Bell   System 40
09 Make Yourself This  'Auto Wah'  For Your Guitar  43
10 Digital Calender  Showing Day Date And Month 48
11 Digital control Of A Machine  54
12 The Opto - Finish  Reportage 58
13 Power Supply With Plus Features 65
14 Car Voltmeter With LED Display 67
15 Handheld   M W Receiver 72
16 Auto shut  -  Off Door Luck  Alarm 77
17 Pressure  Monitor 88
18 Linear Scale  Electronic Ohmmeter  91
19 T V Pattern  Generator  100
20 Shock Hazard '  Warning Idicators   113
21 A Musical Door Bell 115
22 Digital Score Display  Board 117
23 Q' Master For  'Jam' Sessions 121
24 Electronic Steam Engine Sound Simulater 124
25 Versatile  Digital  Timer  126
26 A Day  Indicator  with Alphabetical  Display 134
27 How To Make  A 25w +25w  Stereo System 139
28 A  Selective  T V Signal   Booster 146

SECTION - B   CIRCUIT    IDEAS
1 LED Control  Circuit  Foult  Indicator  11
2 Grafic Equaliser  12
3 Touch  Swith  14
4 LED  Semiconductor  Tester  14
5 Metronome  14
6 Running  Wheel 21
7 Two - Way  Remote Alarm 22
8 Auto power off '  Control  For Tape  Recorder 22
9 Mosquito  Reppeler  24
10 A Simple Singing Bird Circuit 24
11 Asymmetrical  Astable Using Single IC741 28
12 Make Your Own 7 - Segment  LED Display 28
13 Self - Resetting  Intruder Alarm  29
14 0 - 25 V 1 A Regulated  Power Supply  36
15 Squre  Wave Osilator 37
16 Electonic  Thermostat 38
17 Sequential  'running '   Lights 38
18 Key Bounce  Eliminater For  Single Contat Key 45
19 Bar Graph Mains  Voltage  Indicater  46
20 CMOS/TTL  Versatile  test /  probe 46
21 High Quality Noise Filter 47
22 Auto Shut Off ' For Radio 62
23 Crossover  Network 63
24 Running  LEDs 63
25 A Transformerless Emergency Lamp With Optional Undervoltage Indication 64
26 Continuity  Chaker Doubles As Signal  Source 64
27 A Simple  Intercom  65
28 Siquancial  Light Display  Using  Relay 69
29 Negative Voltage  Supply From single Positive  Voltage 70
30 Motor  Overheating  Preventer 71
31 Solidstate  Emergency  Light 71
32 Rhythmic  Timer  80
33 Two Internal Timer  For Preset Control Of Electric Lamps 81
34 Sound Effect Equaliser 82
35 Electronic  Toss 83
36 Burglar  Alarm 83
37 Cyclic  Lights 83
38 Rain Detector 84
39 Ambience Circuit  For Stereo 85
40 Simple Touch  Sswitch 85
41 Fan Regulator   Cum Light  Dimmer 86
42 A  Three - Octave  Organ 86
43 Musical  Sound  Generetor 87
44 Who's First' Single  Chip Game 94
45 Car  Battery  VOltage  Booster 96
46 200VA   Inverter 96
47 Carrier Failure  Indicator 98
48 AF  Singal Generator 99
49 T V Bar Generator 99
50 Check  The  Swich - On Surges 100
51 Feeder  Protecter 103
52 Automatic  Battery  Swiching  For  Digital  Clocks 106
53 A  Low - Cost Transformerless  T V Power  Supply  106
54 Anti - Theft Alarm 107
55 Solidstate  Emergency Lamp Using An  Opto - coupler 107
56 Transistorised  Touch  Switch 108
57 In/Out  Indicator 109
58 Digital Stopwatch 110
59 A  Versatile  Waveform  Generator 110
60 Digital   IC  Tester 112