thief detector circuit diagram

The presented circuit diagram is used to catch the thief.  This circuit is built using transistors BC548 and AC188. 

 Put a thin copper wire connected between the base and negative line of transistor BC548 where there is a way for thieves to enter the house.  

Now as soon as the thief tries to enter the house, the copper wire will break and as soon as the copper wire breaks, the positive voltage through the resistance R1 10k will come to the base of transistor BC 548 and the circuit will be turned on.  

As soon as the circuit is turned on, the resistance and 103PF connected between the transistor BC548 base and the collector of transistor AC188 together produce a sairan-like frequency that will be heard in the speaker connected to the collector of transistor AC188.  This circuit is very simple and very easy to use.

A list of electronics components used in this circuit given below. 

Thief detector circuit diagram 

<img src="/imgs/thief-detector-circuit-diagram.jpg" alt="Thief Detector Circuit Diagram">


Electronics components 
Transistor
Q1 BC548 
Q2 AC188
Resistance 
R1 10K
R2 330K
PF 103
Speaker 
PCB BORD 
Watch full video 


Location: Ramala, Uttar Pradesh 250623, India

Comments

Vicky Electronics said…
Very nice and good enportant
15 September 2019 at 20:49
Unknown said…
Can you send me ac dc rechargeable led bulb driver circuit diagram. Pls
6 October 2019 at 17:19
Unknown said…
Very very useful and very cheap,excellent I like it.Can you load water level indicator circuit,if you have?
7 October 2019 at 15:29
SK KUSHWAH said…
क्या बना हुआ सर्किट भेज सकते हो
30 October 2019 at 08:08
Unknown said…
Use LDR ya sensor se operate kr sakte hai?
17 November 2019 at 00:30
MoneyPaint said…
Awesome 👍👍😁
11 January 2020 at 23:04
Unknown said…
Bahut acha diagram hai
17 March 2020 at 14:01
Unknown said…
Mughe ak quiz masatr 4 chane rily ka jorat he 1 on hoga 3 off hoga 2 no hoga ar 3 off hoga 1 jab on he or koi on hona neichahia jabtak on bala off nei hua a ase ak sarakit dijia
25 March 2020 at 08:06
Unknown said…
whwere you put the input drive in that circuit
14 December 2021 at 08:16
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