Touch sensitive burglar alarm for internal security
This simple circuit when connected to a metal locker or cupboard generates an alarm when touched by an undesired entity.
The transistor gets saturated by just touching its base. Here is a simple, low cast touch switch with alarm based on this idea. The 50 Hz hum present in our body is the key to this circuit. BC 549 transistor has been chosen for this circuit. The circuit is basically a burglar alarm with timer. Timer circuit is a monostable multivibrator. Initially voltage at pin 2 of IC 1 is low.
If the sensor, which is the base of the transistor T1 is touched by the finger (even the slightest, touch will do) transistor T1 is saturated. Now the voltage at pin 2 of IC 1 is greater than 1/3 Vcc. As a result IC 1 gets a trigger pulse at its trigger input pin 2. Therefore its out goes high for a predetermined time period. The period can be adjusted by varying the value of resistor R1 or capacitor C1 as T=1.1*R1*C1 sec.
The siren circuit is build around IC 2 (UM 3561). Since the output of IC 1 is high, the IC 2 gets power supply. The output from IC 2 is amplified by transistor to drive an 8-ohm, 500mw load-speaker.
Can you please send me the details of this project?
can u please send me the pcb drawing for each circuits fast pleaaaaaaaaaaaaase I neeeeeeeeed them???????
al-marsa87@hotmail.com
please mail the details to m_awan89@hotmail.com
hi,
i am interested in electronics house.so plz send me the related details of this projects.
nice project
I want to make it as a final year of my university project.pls send me details like circuit diagram, description, requirements,budget n physical view. pls my id: safayeth.bd@hotmail.com
plssssssssssssssssss
this is awesome project.please send me all pcb lay outs,circuit diagrams,lay out of circuits on house.functionong of remote controlled equipments.pls send me the full details about this project..thankuuuuu……my email id:rajeshkannapwf@gmail.com
I HAD FINISHED ALL THE BREAD BOARD CONNECTION ON THIS PROJECT, NOW I HAD TO PROCEED TOWARDS PCB DESIGN SO PLEASE SEND ME THE LAYOUT ON THIS PROJECT………..
SO PLEASE HELP ME MA EMAIL ID :punya_chettri@yahoo.com
Respected Person,
I am very intersted in smart house.
Please send me all detail related to smart house as soon as possible.
I shall be very thankful to you.
—mohit
sir,
i just want more abut electronic house concept
please relay on me,i want to make it my profession
sir,
i just want more abut electronic house concept
please send me this project . this is essential in now-days……..
Dear Sir,
I am so glad that I come across your site as I was looking for similar projects. It is very informative.
Please let me know if you have the layout and pcb details and if possible please mail the same to me to my above email. I will be ever grateful to you for that.
Thanks and warm regards,
Sushil Rao
hi, friend
this project is simply superb.iam very interested to know all details of the project.please send me the details please——–
bye.
i think i interested to do electronic house project…please send me as soon as possible about the details of this project including the circuit and the pic programming..thank you..
sir..
i’m really intrested in this project..hope u can mail me the whole details about this project ASAP..im very thankful if you give me a hand…
regards..
sir..
i’m willing to do this project..hope u can mail me the whole details about this project ASAP..im very thankful if you give me a hand…
regards..
Dear sir,
I am interested in ELECTRONIC HOUSE.please send circuit detail and more information…
pls……send me all information
hi.sir now i am in final year. i want to do this project sir.please send me the details about this project sir.i need layout,circuit diagram and all details to implement this project sir.please sir,send every details to me sir.
I saw this dude, he was wearing a leather jacket, and at the same time he was eating a hamburger and drinking a glass of milk. I said to him “Dude, you’re a cow. The metamorphosis is complete. Don’t fall asleep or I’ll tip you over.”
I am a student of b.tech(EC) final year
I’m interested in this project.
Can you please send me all the details and circuit diagram of this project with component list with its spacification.
I am a student of b.tech(EC) final year
I’m interested in this project.
Can you please send me all the details and circuit diagram of this project with component list with its spacification.
I am BCA 2year student from vinayaka mission university.
Please you can sent some C++ project,code.
anilvishwkrmabca@gmail.com
hi..
plz send me d details…
hi
You project is the best
Can you please send me all the details and circuit diagram of this project with component list with its spacification. I really need it for my final year project.
HI.
SIR.
i am be final year student i interested in this project please send detail of this project and also pcb layout for same.
I HOPE YOU SEND SOON.
THANKS SIR
DEAR SIR,
you have done a wonderful job. Please let me know if you have the layout and pcb details and if possible please mail the same to me on above mail.
thanx
How would it be possible to start the motor between specific hours of the day. As you know in city , power supply is available for a certain fix hours . I would like to have some idea from upon this.
*Water supply