122-28176 Parallax Inc, 122-28176 Datasheet - Page 183
![GUIDE STUDENT PROCESS CONTROL](/photos/8/99/89965/mfg_122-28176_sml.jpg)
122-28176
Manufacturer Part Number
122-28176
Description
GUIDE STUDENT PROCESS CONTROL
Manufacturer
Parallax Inc
Specifications of 122-28176
Accessory Type
Manual
Product
Microcontroller Accessories
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
Propeller Education (PE) Kit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
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A Little More on Op-Amps
In the op-amp configurations, the signal was applied to the non-inverting input. An input
voltage of 2 V produced 4 V at the output with the configuration shown in Figure 5-26.
The non-inverting input, and the configuration, is named such because a positive voltage
in produces a positive voltage out, or, more specifically, the output rises when then input
rises and the same is true for decreasing voltages.
Consider the alternative – the Inverting Amplifier shown in Figure 5-27. With an input
of 2 V to the inverting terminal, the output will be −2 V.
The op-amp still wants to balance the inputs. If the inverting terminal is 2 V higher than
the non-inverting (which is 0 V), the output wants to drive the inverting terminal down to
balance the inputs, or subtract off those 2 V, so −2 V is needed.
Figure 5-26
Example Non-
Inverting Amplifier
Configuration
Figure 5-27
Example of Inverting
Amplifier
configuration
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