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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

i need helpin an alarm circuit

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doda16eg

New Member
hi everybody
hope u r all doing well;
i need a schematic diagram 4 a circuit used as a photo cell 3 an alarm at which when the beam of IR is cut it gives buzzer all what i need is the circuits the IR transmitter and reciever
thx 4 ur help
bye
 
Try searching on google, you will be amazed at what you will find......... And if you tell me you cant find anything ......... you did something wrong because I just got thousands of result
 
plz reply

thx a lot 4 ur attention
sorry would u help me , i can't find the keyword for which i will search in google plz tell me what to search 4 to give me the result i need thx 4 ur reply
bye
 
thx Russlk but ....

thx Russlk a lot 4 ur reply but i wanna ask is the 2 circuits in the first site compatible with each other and can be used in my idea or no ? and the seconnd link does not work thx a lot
waitingggg 4 ur reply
bye
 
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