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Contact Details
MELODY HOBBY CENTRE ( Showroom ), 7F/7A, DDA Building, District Centre, Janak Puri, New Delhi - 110058.
MELODY'S PROJECT GUIDANCE SERVICE ( Workshop ), UG-18, Jyoti Shikhar, (5 Storey Bldg. Opp. Police Station), Plot No. 8, District Centre, Janak Puri, New Delhi - 110058.
Tel : (o) 91-11-25513525, 25613525 Cell : 9811111537 Email : melodyprojects@yahoo.co.in
PRINTED CIRCUIT BOARD
 (PCB's for the projects published in 'Electronics For You' monthly magazine)
Ready to solder, roller tinned and epoxy coated PCBs in Phenolic board
Yr.-M / PagePROJECTVol./PagePrice
1981
81-08/61		DVM Module for Digital Voltmeter cum Thermometer2/7890/-      
1982
82-03/23		Stereo Control Module2/11530/-     
82-10/54Tele Visage 3/11515/-     
82Digital Clock using ordinary components3/3560/-     
82-10/59Electronic Horn for Cars3/11720/-      
82-11/82Snooze Switch for Mechanical Alarm Clock 3/123 25/-      
1983
83		Sanguinoscope 4/1730/-     
83-02/54Digital Combination Lock for Cars4/1830/-      
83-04/64Digital Calendar (Double Sided)4/48125/-     
83-07/65Opto-Finish Reportage4/5875/-      
83-08/73Pressure Monitor4/8820/-      
83-09/71MW Receiver4/7230/-     
83-10/41 & 45Digital Clock with Additional Features 4/420/-      
83-10/51'Q' Master for Jam Sessions 4/12150/-     
83-10/73TV Pattern Generator4/10060/-      
83-11/52Linear Scale Electronic Ohmmeter4/4730/-      
83-12/77 & 78Digital Score Display Board 4/13980/-      
83-12/9725W + 25W Stereo System 4/13945/-      
1984
84-01/86		Utility Door Bell5/5820/-      
84-02/68Two Band Hi-Fi Receiver5/930/-     
84-03/71Musical Tune Generator5/2040/-      
84-06/63Transistor Lead Identifier Cum Tester5/5535/-      
84-07/6625-Watt Power Amplifier5/13165/-     
84-07/67Power Supply for above5/13530/-      
84-08/77The Capacitance Meter5/7320/-      
84-09/63The Delay Switch5/10320/-     
84-09/71Function Generator5/7640/-      
84-10/6420W+20W Stereo Amplifier5/9660/-     
84-10/71Analogue Frequency Meter5/8720/-      
84-12/73Machine Gun Sound Simulator5/12030/-      
1985
85-01/60		Stereo Tape Deck Module-16/940/-     
85-03/56Power Supply for TV Receiver6/4220/-      
85-04/12Stereo Tape Deck Module-26/1240/-     
85-05/70Hourly Chime for Digital Clock6/16035/-      
85-05/74Tape Cassette Copier Play Module6/17635/-     
85-05/75Tape Cassette Copier, Record Module6/17745/-      
85-05/76Tape Cassette Copier, Control Module6/17835/-      
85-06/65SMPS Power Supply for B&W TV Receiver6/13480/-      
85-08/595V-200V DC Power Supply6/15245/-      
85-08/74FM Signal Generator6/17135/-      
85-09/79LM 317 Adj. Voltage Power Supply6/7340/-      
85-11/76Blown Fuse Indicator6/16530/-      
85Mind Reader game6/7030/-      
85Listening Bug6/7020/-      
1986
86-01/82		Single Display Operation for Voting Machine30/-      
86-01/83Single Display Monitoring for Voting Machine60/-
86-02/72AC Voltage Regulator, PCB I60/-      
86-02/73AC Voltage Regulator, PCB II40/-    
86-02/78STD/Local Bar7/11625/-    
86-03/76A Game of Steady Hands7/1920/-    
86-03/80Quick 741 and 555 Tester7/925/-    
86-04/83Radio Cassette Recorder-I, Tape Recorder7/4340/-    
86-04/85Radio Cassette Recorder-II, Radio PCB7/4350/-   
86-05/80120W+120W Stereo Power Amplifier7/81110/- 
86-06/71VHF TV Booster7/3735/-   
86-06/80Stereo Control Cum Preamp for 120+120W Amp7/8770/-   
86-07/76Traffic Light Control System7/12295/-   
86-08/79Sound Activated Flash for Stop Action Photo7/7625/-   
86-08/89Graphic Equalizer (a) Main Board7/10175/-   
86-08/90(b) Power Supply for the above7/10640/-   
86-09/82Car Clock Module7/6120/-   
86-09/83Car Display Module7/6120/-   
86-09/8712-Tune Musical Door Bell7/5310/-   
86-11/77Digital Tachometer-Using Sinclair Spectrum 7/13320/-   
1987
87-02/85		Quiz Display's Main Circuit 8/14 50/-   
87-02/86Quiz Display's LED Display8/1440/-   
87-03/87Digital AC/DC Voltage cum Continuity Tester 8/1915/-   
87-04/60Digital Bank Token Number Display8/2270/-   
87-04/61Digital Bank Token Number Display8/2255/-   
87-04/62Power Supply for Token Display8/2220/-   
87-05/85Yoka Fun Box8/3335/-   
87-06/88Universal Logic Probe8/4420/-     
87-07/85Wind Direction Indicator Display8/5220/-     
87-08/43The VU2ATN QRP Transceiver8/55130/-   
87-08/85Transistor & Diode Tester cum Signal Injector 8/8015/-     
87-10/84High Grain 4-Stage TV Booster8/7230/-     
87-11/75LED scope (Display Board)8/8395/-     
87-11/76LED scope (Main Board)8/86100/-   
87-12/53Lead Acid Battery Charger8/7020/-     
1988
88-01/94		Four IC 74C926 Based Project9/83 50/-     
88-02/78Electronic Advertisement Display9/2360/-    
88-03/99&100Melodious Digital Timepiece9/8885/-    
88-03/10610+10W Car Stereo Cassette Player9/9625/-      
88-07/105Solidstate Servo Stabiliser (Double sided glass epoxy)9/124220/-    
88-10/92&93LNA (Satellite Reception)100/-   
88Mini Table Tennis Game9/2830/-      
88Bi-Colour LED disco running lights9/18520/-      
1989
89-12/119		Automatic Emergency Light10/11830/-      
1990
90-01/119		Ultrasonic Pest Repeller11/5345/-      
0-06/67UHF Receiver70/-
90-06/112Touch Me Not11/14220/-
90-09/23980W Car Stereo11/3860/-
90-12/13510+10 Stereo Cassette Player11/6540/-
1991
91-01/108		Intercom With Handset12/1420/-
91-01/124Match Box Size Radio12/13610/-
91-02/115&11730W+30W Stereo Hi-Fi Double Cassette Recorder Set12/18125/
91-02/122Multirange Adjustable Timer12/2935/- 
91-05/96UHF TV Booster12/5830/-
91-06/105,8,10Neo Digital Clock12/39250/-
91-07/97, 98Composite Electronic Organ12/76130/-
91-09/926 Band Low-Cost Graphic Equalizer12/98 45/-  
91-09/97VHF Antenna Booster12/10130/-  
91-11/103Microphone Amplifier for Double Cassette Recorder 12/11930/-  
91-11/1042-Band Tuner for Double Cassette Recorder 12/11935/-  
1992
92-01/94		Tape Cassette Copier13/0130/-  
92-01/96Two-Way Intercom13/0520/-  
92-02/97Hit The Target- game13/1270/-  
92-03/79 & 80Digital Time Switch13/20100/-
92-04/40 & 42Digital Frequency Counter13/2665/-  
92-05/99Clap-Operated Remote Control for Fans13/3820/-  
92-06/368W+8W Stereo Amplifiers Module13/4130/-  
92-07/84Digital Volume Control13/4865/-  
92-07/90Cook Timer13/5220/-  
92-08/49CMOS Pocket Table Time Keeper13/5825/-  
92-09/135&136Electronic Number Shooting Game13/61 100/-
92-09/143CMOS Clock with Timer13/6670/-  
92-10/6970/40-Watts Hi-Fi- Amplifier13/7160/-  
92-10/74 & 75Universal Timer13/7590/-  
92-11/105Digital Car Lock With Alarm13/8420/-
92-12/105Electronic Switch Starter13/9020/-
1993
93-01/46		LED speedometer14/0320/-
93-01/48Walkman Radio Player14/0510/-
93-02/94High Power Stereo Integrated Amplifier14/07 60/-
93-03/93The New Generation Stethoscope14/1825/-
93-03/98 a & bCordless Remote Control Set14/2235/-
93-04/109Add on Devices for Multimeters 14/2825/-
93-06/97Emergency Light (using 23 cm Fluorescent tube)14/3730/-
93-06/100Touch Operated Digital Volume Control14/40 55/-
93-07/107Auto Protection for Refrigerator14/4620/-      
93-09/82Revolving Seconds Display14/56130/-    
93-09/91Automatic Porch Light cum Door Phone14/6245/-      
93-10/102&103100W Power Amplifier14/66100/-    
93-11/114Multistation Intercom14/7525/-      
1994
94-01/77		A Versatile Receiver for Dxers 15/0340/-      
94-02/85Hi-Fi Stereo Cassette Deck15/12130/-    
94-05/81 & 82A Single Chip Digital Clock & Calendar 15/3755/-      
94-10/79Solid State Advertisement display15/7440/-      
94-11/5060W Active Amplifier System15/8355/-      
1995
95-02/106		Two-Band Radio Based on Zn 41416/08 30/-      
95-03/129&130Audio Histogram Set16/1590/-      
95-05/79&80Programmable Digital Clock16/2585/-
95-06/91Auto Shut Ni-Cd Battery Charger16/4220/-
95-07/97A Versatile on/off Timer16/4838/-
95-09/84Pocket FM Receiver16/5730/-
95-12/98Budget Digital Oscilloscope16/7955/-
95-12/103&104Active Crossover Network16/84100/-
1996
96-01/81		Pocket Radio cum Hearing Aid 17/3 15/-  
96-02/80Wide Band Booster using FET17/920/-  
96-04/70 & 71Stereo Percussion Instrument17/2045/-  
96-04/76All-In-One Alarm 17/24 15/-
96-05/76Cordless FM MIC 17/101 10/-
96-06/76, 77Home Security System17/3560/-
96-08/90Moving Message Display17/5340/-
96-09/81Automatic Emergency Torch17/5725/-
96-10/83Programmable Digital Time Switch17/63100/
96-10/88Data Acquisition Card for PC17/6740/- 
96-11/84Basic Radio Transmitter17/7030/- 
96-11/89Simple Analogue Interface for PC17/7445/- 
96-12/90Variable DC Power Supply17/8140/- 
1997
97-01/90		Automatic Voltage Stabilizer18/926/- 
97-02/86Manual EPROM Programmer Cum Vertifier18/1665/- 
97-03/57PC Based Function Generator18/2326/- 
97-04/60,62a,b20 Mtr Cw/SSB Receiver18/3385/- 
97-05/54Moving Message Display using 808518/39160/-
97-07/103Digitally Controlled Variable Power Supply18/7262/-  
97-08/98Telephone Call Meter18/8255/-  
97-10/64Bank Token Number CMOS Display 18/102 65/-  
97-11/53Simple Relay & Sensor Interface for PC18/106160/-
97-11/57Emergency Light using CFL18/11020/-  
97-12/58Infrared Remote Control 18/114 30/-  
1998
98-01/57		Versatile Digital Thermometer 40/-  
98-02/57Precision Digital Stop Watch 50/-  
98-03/53Automatic Lead-Acid Battery Charger 55/-  
98-04/53Digital Dial Clock 45/-  
98-05/81Remote Controlled Switch Board 70/-     
98-07/48Electronic Telephone Demonstrator 70/-     
98-07/84Digital IC Tester 400/-   
98-09/60CMCS Power Supplies 65/-     
98-09/79Ni-Cd Battery Charger for Walkman Battery 15/-     
98-10/57Telephone Controlled Remote Switch 45/-     
98-11/52PC Based 4-Axis Stepper Motor Control 55/-     
98-11/83 a,bDigital Function Generator 95/-     
98-12/63a,b, c500 Wt. Mosfet Based Inverter 125/-   
1999
99-01/57		Digital Input-Output Card for PC 255/-   
99-01/94Versatile FM Stereo Receiver 55/-     
99-02/53Switchless Musical Calling Bell with Counter 35/-     
99-03/46Calling Number Identification using Calculator 40/-     
99-05/48Mains Frequency Monitor 40/-     
99-05/57Up Based Token Number Display with Speech Facility 50/-     
99-07/79Fast Charger for Inverter Batteries 15/-     
99-09/96Sleep Switch Wake-Up Timer 50/-     
99-11/4750Hz Sine wave Inverter 30/-
99-11/52An 8085 Microprocessor Kit 425/-
99-12/50Multichannel Code Lock System 45/-     
99-12/53Automatic Induction Motor Starter with Programmable Timer 35/-     
2000
2000-02/54		Stereo Cassette Player 85/-     
2000-03/55Elect. Proof Water Level Solution 85/-     
2000-04/55Electronic Voting Machine 130/-   
2000-06/52Portable Ozone Generator 90/-     
2000-07/49C-Band Satellite TV Receiver 205/-   
2000-08/56Simple IC Tester 25/-     
2000-09/45 Display Schemes for Indian Languages 500/-   
2000-09/57 Digital Code Lock 50/-     
2000-10/48MOSFET Based 50Hz Sine wave UPS/EPS 200/-   
2000-11/48PC to PC Communication IR/Laser Beam 30/-     
2000-12/47Electronic Bell System 55/-     
2000-12/56Simple Telephone Recording / Answering Machine 55/-     
2001
2001-01/68		Automatic Room Light Controller45/-     
2001-02/54Intelligent Water Level Cont.(Feb. 2001)45/-     
2001-02/58Unique Liquid Level Indi.(Feb. 2001)50/-     
2001-05/56a&bTelephone Line Interfaced G.Switching Sys.(May 2001)110/-
2001-07/52Microcontroller Based School Timer(July 2001)45/-
 Programmed Microcontroller IC for the above project400/-
2001-08/47Digital Capacitance Cum Frequency meter(Aug 2001)55/-
2001-08/57Fluid Level Cont. with Indicator(Aug 2001)65/-
2001-10/55Microcontroller Based Digital Clock(Oct. 2001)65/-
 Programmed Microcontroller IC for the above project450/-  
2001-11/54Automatic Submersible Pump Cont.(Nov. 2001)30/-
2002 2002-1/68Versatile Program Timer(Jan. 2002)60/-
2002-03/51Digital clock with hourly music65/-
2002-04/54,56Digital flow meter70/-
2002-06/46Voice Recording and play30/-
2002-09/49P.I.C Burner60/-
 

Note: Please add Rs.10/- for circuit diagram.

ELECTRONIC KITS (WITHOUT CABINET)- Available on request
04/09100 Watt Inverter150/-   
97-09/86Powerful AM Transmitter (With MIC Amplification) 200/-   
98-09/77Ni-Cd Battery Changer for Walkman Battery 350/-   
16/125Telephone Call Recorder 95/-     
99-04/44Caller-ID Unit using Micro-controller with Cabinet 650/-   
13/125Electronic Ballast/Choke 190/-   
09/187Water Level Controller 225/-   
99-09/Remote Audio Board 850/-   
 CHIP_CHAP Hobby kit for over 100 do-it-yourself educational experiments675/-
April 89Transmitter excluding cabinet & Power supply70/-
Jan 91Match Box Size Radio with cabinet60/-
May 89Sound operated timer75/-
Jan 93Fire Alarm70/-
Dec 88Bi-colour LED DIsco Running Light105/-
Sept. 95Pocket FM Receiver excluding Cabinet210/-
Jan 96Pocket Radio cum Hearing Aid200/-
May 96Cordless FM MIC with cabinet130/-
Feb 97Water level Indicator85/-
e.p.vol3Burglar Alarm60/-
Nov 97Emergency LIght Using CFL210/-
e.p.vol7Condenser MIC Amplifier80/-
Jan 96Magic Eye85/-
Dec 99Long Range FM Transmitter200/-
Jan 2000Smart-FLUID LEVEL INDICATOR185/-
Jan 2000Simple Code Lock190/-
Aug 99Water Level Controller cum Motor Protector Kit180/-
Sept 2000Blown Fuse Indicator75/-   
June 2000Powerful Pest Repeller170/-
Oct. 99Timer for Students200/-
E.P.Vol.16Power Failure Indicator140/-
Oct 99Low cost Transistorised Intercom150/-   
June 2000Two-door Door Bell170/-
March 2001Musical Touch Bell70/-
E.P.Vol17Security System100/-
Dec 2001Smoke Alarm140/-
Dec 2001Fastest Finger First Indicator300/-
Feb 2002Multitester with Audio-Visual Indicator70/-
Jan 2002Mobile Phone Battery Charger100/-
2000-07/86Inverter Overload Protector with delayed Auto Reset 220/-   


ELECTRONIC HOBBY KITS
(KITS IN UNASSEMBLED FORM IN BLISTER PACK)

HKLIST

SIMPLE ELECTRICITY KITS (all with cabinets) FOR JUNIORS
HK-ACycle head light bulb with switch3-VVol. (I)30/-    
HK-BWheel show3-V(I)20/-    
HK-CMosquito repeller (mats type)220-V(I)40/-    
HK-DDiwali Lights (20 bulbs)220-V(I)50/-    
HK-ENeon Night Light220-V(I)20/-    
HK-FExtension cord220-V(I)60/-    
ELECTRONICS KITS (Cabinets optional or otherwise mentioned)
HK-01Rain/Fire/Fence Alarm (any one)3-V(I)50/-     
HK-02Dancing L.E.D. (6 nos.)3-V(I)40/-     
HK-03Light Activated/Elec. Eye (any one)3-V(I)60/-     
HK-04Single Tune Musical Bell3-V(I)60/-     
HK-05Match Box size Mini Radio1.5-V(I) (with cab.)50/-     
HK-06Electronic Parrot Bell220-V(I)60/-     
HK-07Simple Intercom (one way)3-V(I)80/-     
HK-08Light Activated Switch6-V(I)100/-    
HK-091.5V-12V Voltage Eliminator220-V(I) (with cab.)100/-    
HK-10Electronic organ (555)3-VVol.(II)60/-      
HK-11Robot Sound3-V200/-    
HK-12Water Level Controller12-V180/-     
HK-13Bi-Colour LEDs6-V(II)90/-      
HK-14Clap Switch with relay9-V(II)90/-      
HK-15Six LEDs Water Level Indicator9-V(II)60/-      
HK-16Good Morning Alarm (IC-555)6-V(II)70/-      
HK-17Intruder Alarm (IC-555)6-V(II)70/-      
HK-18F.M Transmitter3-V(II) (with cab.)90/-      
HK-19Listening Device Mic Amplifier9-V(II)100/-    
HK-20LED Direction Indicator12-V(II)80/-     
HK-21Musical Lights (seven LEDs)9-V(II)70/-     
HK-22Light Dimmer for Bulb220-VVol.(III)60/-     
HK-23COB Voice Modules each with speak
Dog, Clown Laugh, Tune, Cat, I.L.Y		3-V(III)60/-     
HK-24Intercom two way (self ringing)9-V(III)160/-   
HK-257 Watt Amplifier Vol.BASS.TREB12-V(III)100/-   
HK-26Ultrasonic Pest Repeller9-V(III)120/-   
HK-27MW Radio Receiver (Handy)3-V(III) (with cab)120/-   
HK-28Electronic Timer (555 with Relay)6-V(III)80/-    
HK-29Musical Car Reverse Horn12-V(III)70/-    
HK-30Emergency Light (6V/6W Tube)220-V(III)180/-  
HK-31M.W. Transmitter9-V(III)70/-    
HK-32Mini Table Tennis Game5-VVol.(IV)200/-      
HK-33Number Finding Game5-V(IV)150/-      
HK-34Pocket Time Keeper6-V(IV)100/-     
HK-35Remote Switch (Infra Red)5-V(IV)300/-     
HK-36F.M Receiver (88-108 MHz.)6-V(IV)150/-     
HK-37Electronic Dice (555/4017)6-V(IV)60/-      
HK-38Digital Clock (4 FND’s)5-V(IV)300/-    
HK-39Three-Tune Gun Sound3-V(IV)70/-      
HK-40Telephone Parallel Line Disconnector12-V(IV)100/-     



Exam tips, Free help for Students
SOLDERLESS ELECTRONIC KITS
(A 'DO IT YOURSELF' OPTION)
These kits are good for beginners, as it doesn’t require soldering etc. Different components can be joined using spring type breadboard, just by pushing in the terminals or wire ends to the terminals. Many projects can be made in each kit. These are 100% safe and work on 3V d.c. Only.
(1) ELECTRO-FUN: A 100-IN-ONE ELECTRONIC EDUCATIONAL KIT
 425/-      
This kit is very useful for all age hobbyist & Professional to do all type of experiments with almost all type of Electronic components provided in kit. It comprises 71 spring terminals to do 100 experiments decently categories under 10 headings given below:
(a) Basic Electronic Projects               (b) Radio & Transmitter             (c) Oscillators
(d) Alarms & Siren                             (e) Household devices                (f) Fun & Entertainment
(g) Testing Devices                             (h) Musical Devices                    (i) Digital Electronics
(j) Misc.
(2) ELECTRO-PHYSICS: A 20-IN ONE EDUCATIONAL KIT400/-      
This kit is useful for Senior Sec. students to do experiment related to Ohms Law, Resistance or Capacitor in series/parallel, Wheatstone bridge, working of Diode, Transistor, Zener etc. Projects on Oscillators & Logic gates etc.
(3) ALLADIN: A 30-IN-ONE ELECTRONIC EDUCATIONAL KIT (Economy)
180/-      
This kit is quite useful for juniors to start with the Electronics as hobby i.e. to introduce with Electronic Components & understand the working of components work under circuits & to assemble Electronic devices using the given components on spring terminals etc. One can make the given below project:
Basic Electronic Organ, Flasher, Water Level indicator, Electronic Timer etc.
MISCELLANEOUS KITS FOR ELECTRONIC WORK BENCH
(a) TOOL KIT:This kit contains: Bakelite Soldering Iron (35 w), Solder Wire , Flux , Flexible wire, Twizzer, Nose Plier , Cutter , Flat File, Line tester, Screw driver (10 items)180/-      
(b) SOLDERING KIT:Comprises Foldable soldering Iron (10-Watt) Solder Wire, Flux, Flexible Wire, Sand Paper-5 items100/-      
(c) PCB FABRIFICATION KIT:100/-      
(d) Multimeter Analogue (suitable for students)150/-      
Multimeter Digital500/-      
(e) CABINETS:
(1)Water level Indicator30/-      (7)Alarm 3V circuit20/-      
(2)Horn20/-      (8)Bell-Sleek20/-      
(3)Remote Switch30/-      (9)Bell-Fancy30/-      
(4)Amplispeaker100/-    (10)Eliminator20/-      
(5)Ear Phone Radio10/-      (11)Emergency Tube Light100/-      
(6)FM Transmitter10/-      (12)MW Radio (3V)20/-