Electronic Project Volume - 02

Section A : Construction Projects
S.No
 Products
Page No.
01 Make Yourself This C Meter 9
2 Make Yourself This Ultimate Decider 11
03 PCB Making Made Easy Including some Tips to Simplify PCB Cooking 12
04 Make Yourself   A Complete IC Power Supply 17
05 Three Outstation Intercom For Your Home  29
06 Functioning  Of Water Level Alarm Circuit 34
07 Have Fun With 741 36
08 Medium - Wave Pocket Receiver  using A single Penlight Cell 42
09 Inverter For Portable laminator 47
10 Multi vibrator Application  circuit  48
11 AC Mains Voltage Limits indicator That Needs No Separator Power Supply   52
12 5 -Digit Interruption Counter 54
13 Temperature Control Of Pressurized Chamber 58
14 Enhance Your Power Supply circuit 'capabilities 60
15 Make Yourself This 3-In -1 Test Equipment 67
16 How Safe Is Your Safety Ground  71
17 Make Yourself This Digital Volt-Ohmmeter Cum Thermometer 78
18 Improve Your Tape Recorder  With This  Bias Oscillator 85
19 LED  Dancing light Array  For Stereo System  86
20 Make Yourself This Single - IC Stereo Amplifier 90
21 A Tiny crane Circuit  For Lifting delicate  Items 93
22 A Solid state voltage  indicator  With Alarm  96
23 Making  Of A Transistorized Dip Meter Using Junk - -Box Components 98
24 Some Practical  Circuit Using The CA 810 Power IC 102
25 Make New Flashers With IC 555 102
26 A Digital Capacitance  Meter For Rapid Measurement 108
27 How To Make A Stereo  Amplifier 115
28 Make Yourself These  Disco light 118
29 Make Yourself A Printed  circuit Board With A Professional Touch 123

SECTION - B   CIRCUIT    IDEAS
1 Random Running Lamps  15
2 Single Transistor AM & IF Oscillator  16
3 DC Mill voltmeter With Polarity Indicator  16
4 Electrocardiograph Using An Oscilloscope And A Camera  19
5 Long Duration Timer  20
6 Miniature Transmitter  20
7 Musical / Psychedelic Lights  20
8 Variable Dual Polarity Power Supply  21
9 Matching 8 - Ohm Speaker Output To A High (Input ) Impedance Amplifier  21
10 Stereo Amplifier Power Supply  21
11 Infra - Red Burglar  Alarm  23
12 Low - Cost Twilight Switch  23
13 Steady Hand Testing Circuits 24
14 6 - Volt Supply From Car Battery  24
15 Single - Chip 0 - To 360' - Phase Shifter  25
16 Multi Purpose Circuit  26
17 Automatic Switch - Off For Radio  26
18 Day Indicator For Digital Clocks  27
19 Battery Eliminator with LED Indicators 28
20 Digital Electronic Die  32
21 Accurate Timer Using CD 4045 34
22 Peak Level Indicators 44
23 Versatile Regulated Power Supply  44
24 Touch Switch Using 555  45
25 Standby Arrangement  For Digital Clock  46
26 SCR Tester  46
27 Supply Failure Indicator  50
28 Auto Circuit Checker  50
29 Panorama Control For Stereo  50
30 Electronic Gong  56
31 Miniature Lamp Flasher  56
32 Continuity Checker 57
33 A novel Dark Room Timer 57
34 Low - Cost Crystal Tester  66
35 Simple Regulated Power Supply  66
36 A Single IC Versatile Pulse Generator  68
37 1MHz Crystal  Oscillator 69
38 Time Delay Circuit For Protecting A Refrigerator  69
39 All - Purpose Latch - Up Switch  70
40 3.5 W Audio Amplifier  88
41 Sound Operated Switch  88
42 Mains Hum Filter For Audio Circuits 88
43 A Single Touch Multi Control Switch   94
44 Battery Eliminator Without Tapping Transformer 94
45 Three - Way Cross Over Network  96
46 Slow Rising Sirens 100
47 Testing A Transistor Without A Transistor Tester  100
48 A Simple  'JAM ' Circuit  101
49 Op - Amp  Tone Control  101
50 Pulse Narrowing And Pulse Stretching  Circuit 112
51 Singing Bird Bell  113
52 Voltage Control Amplifier 113
53 Continuity  Tester 113
54 A Simple Function Generator Using 555 Timer  114
55 Alternate LED Blinker Using 555  114
56 A Limited Pulsar 122
57 A Simple - Logic Probe  125
58 Automatic Battery Charger  125