122-28176 Parallax Inc, 122-28176 Datasheet
122-28176
Specifications of 122-28176
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122-28176 Summary of contents
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... Errata for Process Control v1.0 (#122-28176) Chapter 4 Opto-Reflective Switch Use Background The opto-reflective switch is used predominately in Chapter means to illustrate sensor sensitivity and response in relation to the sizing of the pull-up resistor on an Infrared (IR) phototransistor's collector. This errata note will assist in successfully completing Chapter 4 activities and demonstrating the principles intended ...
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Part Substitution from Authorship to Publication A part substitution was made during editing and formatting of the text from one which was tested and used by the author to the QRB1114. The IR phototransistor in the QRB1114 has a much ...
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Page 87 recommends moving your hand toward and away from the QRB1114 sensor. The box labeled VCE should show different readings as you move your hand. If the VCE readings do not change, something is amiss, and it is ...
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IR light and register as a high. The number of transitions is counted to arrive at the RPM of the fan. Recommendations Not all inks absorb IR equally and some may be reflective to this wavelength of light. ...