A simple, reasonably high-precision voltage source can set bias points in an op-amp circuit, tweak the feedback node of a power supply through a large resistor, or run a quick linearity test on an ADC. Engineers often use a dc-power supply because it is the only thing they can find,...
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One cure to all of the above issues is to use the digital potentiometer in a three-terminal configuration when possible and to buffer the wiper with an op amp. This circuit will ensure that the wiper current is equivalent to the input bias current of the op amp. By using an ...
If you are using another trigger source feeding the VR input circuit (say the EDIS PIP or some Hall sensors) the polarity may need to be changed, this is when they use the other op-amp output (VROUTINV) instead this polarity follows the VR sensor so a negative-to-positive VR sensor ...
In this circuit, the inverting input of the op amp forces VOto be equal to the wiper voltage set by the digital potentiometer. The load current is then delivered by the supply via the N-channel FET, N1 (see Figure 25). N1 power handling must be adequate to dissipate (VI− VO) × ...
An electronic potentiometer circuit adjust current between 0-5 Vdc was used to control servomotor revolution speed. This system communicates with computer by using serial port. Communication of serial port was established by wireless apparatus... N Turen,B Akdemir,C Saglam 被引量: 0发表: 2014年...
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potentiometer to receive the electrical signal generated by the potentiometer; the programmable logic device is programmed to process the electrical signal generated by the digital potentiometer; and supervisory power processing circuitry attached to the second major surface of the printed circuit board for...
Mechanical potentiometers have been used by designers for decades in applications ranging from circuit trimming to volume control. However, they have their limitations: their wipers can wear out, they are susceptible to moisture ingress, and they can accidentally be moved off their set position. ...