28128 Parallax Inc, 28128 Datasheet - Page 162
28128
Manufacturer Part Number
28128
Description
KIT BASIC ANALOG/DIGI PARTS ONLY
Manufacturer
Parallax Inc
Datasheet
1.28129.pdf
(176 pages)
Specifications of 28128
Accessory Type
ADC, DAC
Product
Microcontroller Accessories
For Use With/related Products
BASIC Stamp® 2 and Board of Education
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 162 of 176
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What have I learned?
On the lines below, insert the appropriate words from the list on the left.
threshold
capacitance
capacitor
RC
exponential
discharge
Analog sensors that vary in resistance or capacitance are used to measure a
variety of physical quantities. An ______________ circuit can be used in
conjunction with a BASIC Stamp binary input pint to measure resistance
or capacitance.
The ______________ is charged to 5-volts, then it is allowed to discharge,
and the time it takes to get from 5-volts to the ______________ voltage of
a BASIC Stamp input pin is measured. The equation for ______________
decay can then be used to determine a value of resistance or capacitance if
the other quantity is known.
An RC circuit where the resistance varies can be calibrated to a certain
range of ______________ times by changing the value of the capacitor.
This method can be used because the resistance multiplied by the
______________ is logarithmically related to the rate of decay.
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