Speedy Automobile Finder

Published:2011/7/9 7:40:00 Author:Felicity | Keyword: Speedy Automobile Finder | From:SeekIC

The circuit of this speedy automobile finder consists of transmitter and receiver, as showed in the figure below. The oscillating signal produced by oscillator circuit which consists of IC1, RP1, R1 and C1 transmitted by antenna W1 after being tuned by C2,L1 and C3. The wireless signal which received by W2 is frequency selected by C4, L2, C5 and amplified by IC2 to drive VL1-5. The shorter the distance between the transmitter and the receiver the stronger the signal, and the more the lighted ones of VL1-VL5. Adjusting the resistance of RP1 and RP2 can change the sensitivity of the receiver.



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