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Pull-up resistors are resistors used in logic circuits to ensure a well-defined logical level at a pin under all conditions.
Pull-down resistors work in the same manner as pull-up resistors, except that they pull the pin to a logical low value.
Datasheets are instruction manuals for electronic components. They (hopefully) explain exactly what a component does and how to use it. Unfortunately these documents are usually written by engineers for other engineers, and as such they can often be difficult to read, especially for newcomers...
Synchro transmitters and receivers are electrically identical. ... The difference between a TDX and a TDR is that the TDX is a torque transmitter and TDR has electrical angle inputs on both the stator and rotor.
Some opamps have diodes between the inputs and others do not.
But there are series dual back-to-back diodes between both inputs that need their current limited if the differential input voltage exceeds about 1.4V.
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