BABY CRYING BELL

1TP019

2B-JOKER LAUGHING OR BABY CRYING COB

PROJECT SPECIALITIES

This project is an interesting and surprising project for the people who are deprived of knowlede in electronics. This project produe a baby crying sound or Joker laughing sound. This can be used as a door bell as well as in cars while reversing.

TECHNICAL DESCRIIPTION AND WORKING:-

This project has been developed and successfully tested OK in TV Engineer Technical Lab.

A chip ON board [COB] is the main component of the circuit. This type of COB does not carry any number. This is an IC of special type mounted on PCB with fixture compound. This can’t be deteched from PCB itself. The circuit works on 12 V DC.

This project produces sounds like baby crying and Joker laughing. The other components in the circuit are for biasing purpose only.

PRECAUTIONS WHILE ASSEMBLING THE PROJECT:-

  1. Do not apply too hot soldering iron on IC chip.

LIST OF COMPONENTS:

BABY CRYING COB [ CHIP ON BOARD]

COB [BABY CRYING] 1

D1- IN4001 1

D2 3.6V ZENER 1

TR1 BC148 1

TR2 2SD313 1

C1 .1 MFD 1

R1 IM OHMS 1

R2,R3 1K 2

R4 560E 1

SPEAKER 8 OHM 1

ON/OFF SWITCH 1

 

JOKER LAUGHING SOUND:

COB [JOKER] 1

D1 IN4001 1

D2  3.6V ZENER 1

R1 IM OHM 1

R2,R4 1.5K 2

R3 100K 1

R5 1K 1

R6 2K2 1

C1  .47MFD/16V 1

TR1 BC148 1

TR2 2SD313 1

SPEAKER 1

ON/OFF SWITCH 1

 

 

 

PROJECTS N KIT DIVISION

RULES AND REGULATION

  1. We have all PCB & Spares for projects in all kits. You should be mount all spares on PCB and will make projects yourself. We can also send all complete projects as per your orders.

 

How to Order

  1. We will not accept order less than Rs. 20/-.
  2. You should sent 50% advance as for your order. Balance amount we will receive through VPP [Cheque + Postal Ordr not accepted, only M.O. Bank Draft accepted]
  3. Prices are net ex office taxes, packing, forwarding, postal charges, bank charges will be extra.
  4. In case return of your packet we will deduct postal charges and other expenses from your advance. Supply of spares  kits  depend on availability.  We should not cover any responsibility for damage or theft of any articles which we send through transport or P.O.
  5. Prices can be changed prior to any information. Projects prices will be based on new price-list.
  6. All transaction are subject to the jurisdiction of Delhi / New Delhi Court.

For details cont:-

Project N Kit Division

 

 

We will very glad to receive your suggestion for faults & its rectification of our any projects published in books of TV Engineer Publication Lab immediately and get prizes of Rs. 200/- , 100/- , 50/- & more consolation prizes for your right suggestion.

Why you read TV Engineer Magazine ?

Our Specialities.

  1. TV Engineer monthly magazine proud of entered in 6th year of this modern electronics age. It is the first magzine of electronic world which have published regular without any obstruction with cooperation of our readers where as future of other megazine are indefinate.
  2. Any defects / defect rectifications of projects of our project circuit book, after checking, its all information will be published in next month edition of TV Engineer monthly magazine. whereas this type of information is not available in others.
  3. We will sent our new project books for winner whose project will be publised in TV Engineer monthly megazine.
  4. TV Engineer Publication has a well equiped laboratory with an advance PCB design Lab & Technical Team work. Which will give you more facilities.
  5. A large & broad net work of monthly magazine of TV Engineer Publication Lab is scattered in the hole country which give you new informations through our publication.

 

Help-Line

we have all the spares & kits for projects. For details, read new edition of the monthly megazine TV Engineer.

Tested O.K. Electronics Projects

Main Attractions

  1. Any modification in projects of our project circuit books, will be published immediately in next edition of the TV Engineer megazine. That facilities is not available with other publishers.
  2. We can arrange projects for the sale & exhibition, In our Lab there is new projects, are develope always and every month, which will be published in next book series. The information of new projects / its price list are published in TV Engineer monthly magazine.

 

 

PROJECTS- N- KIT DIVISION

RULES AND REGULATION

  1. We have all PCB & Spares for projects in all kits. You should mount all spares on PCB and  make projects yourself.  We can also send all complete projects as per your orders.

How to Order

  1. We will not accept order less than Rs. 20/-.
  2. You should sent 50% advance as for your order. Balance amount we will receive through VPP [Cheque + Postal Ordr not accepted, only M.O. Bank Draft accepted]
  3. Prices are net ex office taxes, packing, forwarding, postal charges, bank charges will be extra.
  4. In case return of your packet we will deduct postal charges and other expenses from your advance. Supply of spares  kits  depend on availability.  We should not cover any responsibility for damage or theft of any articles which we send through transport or P.O.
  5. Prices can be changed prior to any information. Projects prices will be based on new price-list.
  6. All transaction/dispute are subject to the jurisdiction of Delhi / New Delhi Court.

 

 

 

We will very glad to receive your suggestions for faults & its rectification of our any projects published in books of TV Engineer Publication Lab immediately and get prizes of Rs. 200/- , 100

/- , 50/- & more consolation prizes for your right suggestion.

 

 

Why you read TV Engineer Magazine ?

Our Specialities.

  1. TV Engineer monthly magazine proud of entered in 6th year of this modern electronics age. It is the first magazine of electronic world which have published regularly without any obstruction with cooperation of our readers where as future of other megazine are indefinate.
  2. Any defects / defect rectifications of projects of our project circuit book, after checking, its all informations will be published in next month edition of TV Engineer monthly magazine. whereas this type of information is not available in others.
  3. We will sent our new project books for winner whose project will be publised in TV Engineer monthly magazine.
  4. TV Engineer Publication has a well equiped laboratory with an advance PCB design Lab & Technical Team work, which will give you more facilities.
  5. A large & broad net work of monthly magazine of TV Engineer Publication Lab is scattered in the whole country which give you new informations through our publication.

 

Help-Line

we have all the spares & kits for projects. For details, read new edition of the monthly magazine TV Engineer.

Tested O.K. Electronics Projects

 

Main Attractions

  1. Any modification in projects of our project circuit books, will be published immediately in next edition of the TV Engineer magazine. Those facilities are not available with other publishers.
  2. We can arrange projects for the sale & exhibition. In our Lab where new projects are developed always and every month, which will be published in next book series. The information of new projects / its price list are published in TV Engineer monthly magazine.

 

 

 

Readers should  order for project as per its Code No., indicated at the first & last page of this Book.

Projects have to be  sent as follows:-

If you want Project No-1 of Book Vol-3, than order as

3TP=1Pc

3 Indicates Vol No. of Book, where a  of 01 Indicates Project No-1

 

My Satisfication

This Article is based on the ” Customer Responce Card” of “Tested OK Electronics Projects Book” which is send by the Readers/ Customers. We are highly obligzed to our Reader, because it Produces Higher & Higher Aims for other Readers.

 

SUBJECT INDEX  VOL. 3

[3TP01] CLAP SWITCH USING IC 1

[3TP02] CORDLESS CURRENT & VOLTAGE TESTER 4

[3TP03] WATER LEVEL INDICATOR USING TRANSISTOR 7

[3TP04] OBJECT COUNTER USING CALCULATOR 10

[3TP05] LONG DURATION TRANSISTORIZED TIMER 13

[3TP06] SMALL MIKE AMPLIFIER 16

[3TP07] CHASER 19

[3TP08] AUTOMATIC ELECTRONIC CANDLE 20

[3TP09] INTERCOM [CORDLESS INTERCOM] 25

[3TP10] BI-COLOURED LED PENDULAM 29

[3TP11] FM BAND RADIO RECEIVER 32

[3TP12] VARRIABLE REGULATED POWER SUPPLY 35

[3TP13] CLAP OPERATED MUSICAL TIMER 38

[3TP14] ADJUSTABLE TIMER WITH ON/OFF 41

[3TP15] FORWARD REVERSE RUNNING LIGHT CHASER 44

[3TP16] HIGH SOUND 4-TUNE SIREN 47

[3TP17] BIRD CUM DING-DONG 50

[3TP18] 20W EMERGENCY TUBE LIGHT 53

[3TP19A] I LOVE YOU COB PROJECT 56

[3TP19B] HAPPY BIRTHBAY TO YOU COB PROJECT 56

 

SUBJECT INDEX  VOL. 4

[4TP01] WAKI-TAKI 1

[4TP02] REMOTE AUDIO LEVEL INDICATOR 4

[4TP03] ELECTRONIC DICE 7

[4TP04] DISPLAY BOARD 10

[4TP05] FRIDGE DEFROSTER 13

[4TP06] SUPER DELUXE TRANSMITTER 16

[4TP07] QUIZ TIMER 19

[4TP08] IN OUT INDICATOR WITH MUSICAL BELL 20

[4TP09] STOP WATCH 25

[4TP10] LETTER BOX INDICATOR 29

[4TP11] AUTOMATIC GARAGE LIGHT WITH MUSIC & AUTO OFF 32

[4TP12] BI-COLOURED L.E.D BLINKER 35

[4TP13] HAPPY BIRTHDAY THROUGH A PUFF OF AIR FROM MOUTH 38

[4TP14] UNDER AND OVER VOLTAGE CUT-OFF 41

[4TP15] WATER LEVEL INDICATOR [Using IC 4049] 44

[4TP16] TIMER WITH RESET 47

[4TP17] 12 TUNE MUSICAL BELL [English] 50

[4TP18] AMBULANCE SIREN 53

[4TP19A] HINDI FILM SONG [GHYAL]COB PROJECT 56

[4TP19B] CAR BREAK COB PROJECT 56

 

 

FROM PAGE 59 [CONTED…..]

[2TP11] COMBINATION LOCK 32

[2TP12] RUNNING LIGHT CHASER 5

[2TP13] NON FADING DISPLAY BOARD 38

[2TP14] CLAP OPERATED FAN SPEED CONTROLLER 41

[2TP15] TRAFFIC LIGHT CONTROLLER 44

[2TP16] DISC 47

[2TP17] INFRARED REMOTE CONTROLLER 50

[2TP18] INTERCOM [Using 810] 53

[2TP19A] [ARTI] SONG COB PROJECT 56

[2TP19B] [TRAIN] COB PROJECT 56

SUBJECT INDEX  VOL. 4

[4TP01] WAKI-TAKI 1

[4TP02] REMOTE AUDIO LEVEL INDICATOR 4

[4TP03] ELECTRONIC DICE 7

[4TP04] DISPLAY BOARD 10

[4TP05] FRIDGE DEFROSTER 13

[4TP06] SUPER DELUXE TRANSMITTER 16

[4TP07] QUIZ TIMER 19

[4TP08] IN OUT INDICATOR WITH MUSICAL BELL 20

[4TP09] STOP WATCH 25

[4TP10] LETTER BOX INDICATOR 29

[4TP11] AUTOMATIC GARAGE LIGHT WITH MUSIC & AUTO OFF 32

[4TP12] BI-COLOURED L.E.D BLINKER 35

[4TP13] HAPPY BIRTHDAY THROUGH A PUFF OF AIR FROM MOUTH 38

[4TP14] UNDER AND OVER VOLTAGE CUT-OFF 41

[4TP15] WATER LEVEL INDICATOR [Using IC 4049] 44

[4TP16] TIMER WITH RESET 47

[4TP17] 12 TUNE MUSICAL BELL [English] 50

[4TP18] AMBULANCE SIREN 53

[4TP19A] HINDI FILM SONG [GHYAL]COB PROJECT 56

[4TP19B] CAR BREAK COB PROJECT 56

 

 

 

FROM PAGE 59 [CONTD….]

[2TP11] COMBINATION LOCK 32

[2TP12] RUNNING LIGHT CHASER 5

[2TP13] NON FADING DISPLAY BOARD 38

[2TP14] CLAP OPERATED FAN SPEED CONTROLLER 41

[2TP15] TRAFFIC LIGHT CONTROLLER 44

[2TP16] DISC 47

[2TP17] INFRARED REMOTE CONTROLLER 50

[2TP18] INTERCOM [Using 810] 53

[2TP19A] [ARTI] SONG COB PROJECT 56

[2TP19B] [TRAIN] COB PROJECT 56

SUBJECT INDEX  VOL. 3

[3TP01] CLAP SWITCH USING IC 1

[3TP02] CORDLESS CURRENT & VOLTAGE TESTER] 4

[3TP03] WATER LEVEL INDICATOR USING TRANSISTOR 7

[3TP04] OBJECT COUNTER USING CALCULATOR 10

[3TP05] LONG DURATION TRANSISTORIZED TIMER 13

[3TP06] SMALL MIKE AMPLIFIER 16

[3TP07] CHASER 19

[3TP08] AUTOMATIC ELECTRONIC CANDLE 20

[3TP09] INTERCOM [CORDLESS INTERCOM] 25

[3TP10] BI-COLOURED LED PENDULAM 29

[3TP11] FM BAND RADIO RECEIVER 32

[3TP12] VARRIABLE REGULATED POWER SUPPLY 35

[3TP13] CLAP OPERATED MUSICAL TIMER 38

[3TP14] ADJUSTABLE TIMER WITH ON/OFF 41

[3TP15] FORWARD REVERSE RUNNING LIGHT CHASER 44

[3TP16] HIGH SOUND 4-TUNE SIREN 47

[3TP17] BIRD CUM DING DONG 50

[3TP18] 20W EMERGENCY TUBE LIGHT 53

[3TP19A] I LOVE YOU COB PROJECT 56

[3TP19B] HAPPY BIRTHBAY TO YOU COB PROJECT 56

 

 

 

 

FROM THE EDITORS

We are now dedicating our valuable publication TESTED O.K ELECTRONICS PROJECTS VOL. 3 to the readers after the successful launching of TESTED O.K ELECTRONICS PROJECTS VOL. 1 & 2. The continuation of the series depends on the heartly co-operation and wishes of our readers. Monthly magazine TV ENGINEER of our publication on the subject of electronics, has occupied an important place in the country among the publications of its kind. The “Superhit OK Electronics Projects” published in this magazine has become extremely popular. Keeping these points in mind we have set up an Electronic lab. named TV Engineer Publication lab. {INDIA}. The projects published in this volume are the efforts of our engineers engaged in the lab. The projects are developed and Tested in the lab. first before being published. We are thankful to Master Vinit Sharma for his untired efforts in testing of the projects.

 

We are also working on the other projects to be published in the other volumes of this series. The projects kits are ready for demonstration in our lab. and  components required for projects are available for sale at a reasonable price also. The updated price list of these projects are published in our monthly magazine “TV Engineer” from time to time. We heartly invite comments and suggestions of our readers for modifications and improvements of our projects.

Mrs Alka Gupta

&

Associate Engineers

 

1995 All right reserved with the publisher.

First Edition – August 1995

Price = Rs. 28/- [Rupees Twenty Eight only]

Published by Mrs. Alka Gupta for TV Engineer Publication, A-10 C.C.Colony, R.P. Bagh, Delhi -110 007 and printed at M/s Harish Book Binding House, Azadpur, Delhi – 110 033.

Please note:-  While Printing, every effort has been made to give complete and accurate circuit which are complete in every respect. However neither the author nor the M/S TV Engineer bears  responsibiliity for its use.You have to apply licence for wireless type project from Govt.

 

FROM THE EDITORS

We are now dedicating our valuable publication TESTED O.K ELECTRONICS PROJECTS VOL. 4 to the readers after the successful launching of TESTED O.K ELECTRONICS PROJECTS VOL. 1 ,2 & 3. The continuation of the series depends on the heartly co-operation and wishes of our readers. Monthly magzine TV ENGINEER of our publication on the subject of electronics, has occupied an important place in the country among the publications of its kind. The “Superhit OK Electronics Projects” published in this magazine has become extremely popular. Keeping these points in mind we have set up an Electronic lab. named TV Engineer Publication lab. {INDIA}. The projects published in this volume are the efforts of our engineers engaged in the lab. The projects are developed and Tested in the lab. first before being published. We are thankful to Master Vinit Sharma for his untired efforts in testing of the projects.

We are also working on the other projects to be published in the other volumes of this series. The projects kits are ready for demonstration in our lab. and  components required for projects are available for sale at a reasonable price also. The updated price list of these projects are published in our monthly magazine “TV Engineer” from time to time. We heartly invite comments and suggestions of our readers for modifications and improvements of our projects.

Mrs Alka Gupta

&

Associate Engineers

 

1995 All right reserved with the publisher.

First Edition – August 1995

Price = Rs. 28/- [Rupees Twenty Eight only]

Published by Mrs. Alka Gupta for TV Engineer Publication, A-10 C.C.Colony, R.P. Bagh, Delhi -110 007 and printed at M/s Harish Book Binding House, Azadpur, Delhi – 110 033.

Please note:-  While Printing, every effort has been made to give complete and accurate circuit which are complete in every respect. However neither the author nor the M/S TV Engineer bears  responsibility for its use.You have to apply licence for wireless type project from Govt.

 

 

 

[3TP06] SMALL MIKE AMPLIFIER 16

[3TP07] CHASER 19

[3TP08] AUTOMATIC ELECTR    #â    €ú  $â    ÿÿÿÿINTERCOM [CORDLESS INTERCOM] 25

[3TP10] BI-COLOURED LED PENDULAM 29

[3TP11] FM BAND RADIO RECEIVER 32          ARRIABLE REGULATED POWER SUPPLY 35

[3TP13] CLAP OPERATED MUSICAL TIMER 38

[3TP14] ADJUSTABLE TIMER WITH ON/OFF 41

[                (       3/9/99  2/12/98 #â  44

[3TP16] HIGH SOUND 4-TUNE SIREN 47

[3TP17] BIRD CUM DING DONG 50

[3TP18] 20W EMERGENCY TUBE LIGHT 53

[3TP19A] I LOVE YOU COB PROJECT 56

[3TP19B] HAPPY BIRTHBAY TO YOU COB PROJECT 56

 

 

 

 

FROM THE EDITORS

We are now dedicating our valuable publication TESTED O.K ELECTRONICS PROJECTS VOL. 3 to the readers after the successful launching of TESTED O.K ELECTRONICS PROJECTS VOL. 1 & 2. The continuation of the series depends on the heartly co-operation and