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Animal litter teller device 1

2014-11-18 16:58  
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Animal litter teller device 1
The animal litter teller circuit is composed of the detection control circuit and alarm signal transmission circuit, and it is shown in Figure 4-16. Detection control circuit consists of comb detection sensor, resistors Rl, R2, capacitors Cl-C3, light-emitting diode V1 and transistor VL. Alarm signal transmission circuit consists of the audio integrated circuit IC, capacitors C4-ClO, resistors R3-R6, transistors V2, V3, antenna W and inductor L. RI-R6 select the 1/4W metal film resistors or carbon film resistors. C2, C5, C8 and C9 use the monolithic capacitors.