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Spring 2002
1/10
÷±}u°D
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High: JB ACALL :
P2.0, High ;u Delay
§
Spring 2002
2/10
÷±}u°D
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R2= R1=
C=
Rq±`
τ 1 = R2C = 100k × 10 F = 1sec τ 2 = R1C = 10 × 10F = 100 × 10 6 sec
Spring 2002 3/10
÷±}u°D
RC low-pass filter. The circuit preserves lower frequencies while attenuating the frequencies above the cutoff frequency, V0 = 1/RC. The voltages Vi and Vo are the filter input and output voltages, respectively.
R
Rq±` τ = RC
+ Vi _
+ C Vo _
Spring 2002
4/10
÷±}u°D
Schmitt trigger
vout
……
