70009 Parallax Inc, 70009 Datasheet - Page 62

• Manufacturer Part Number: 70009
• Description: BOOK UNDERSTANDING SIGNALS
• Manufacturer: Parallax Inc
• Type: Signal Analysisr

Specifications of 70009

• Style: Book
• Title: Understanding Signals
• Contents: Guide to Generate, View and Measure Wave Forms
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 70009PAR

RCTimeConstant.bs2 to Demonstrate Charge/Discharge Curves
' Understanding Signals - RCTimeConstant.bs2
' Read photoresistor in RC-time circuit using RCTIME command.
' {$STAMP BS2}
' {$PBASIC 2.5}
DO
LOOP
HIGH 0
HIGH 15
PAUSE 10
LOW 0
LOW 15
PAUSE 10
√
√
Run the program RCTimeConstant.bs2.
Arrange your display using the red/blue arrows on the left to separate the two
signals as shown in Figure 4-7.
' 5 V on P0
' 5 V to capacitor for charge curve
' time for capacitor to fully charge
' ground capacitor for discharge curve
' same to P0 for comparison
Figure 4-7:
OPTAscope
display of RC
circuit with a
220 Ω resistor
and a 10 µF
capacitor