Patrick Collins, ET3330 Page 376
Pulse code modulation (PCM) is a digital representation of an analog signal that takes samples of
the amplitude of the analog signal at regular intervals. The sampled analog data is changed to,
and then represen
Patrick Collins, Unit 3 Assgin.1, ET2750
1. Describe the operation of a mechanical timing relay.
It has fixed or variable delay incorporated into their design that suspends the movement of the
contacts when the coil is energized, de-energized, or both.
Patrick Collins Unit 1 Lab 1 (Process-Control Instrumentation)
-40 C to
100 ohm at
0.5 psi to mV/V; 0Vdc
Patrick Collins ET2750 Assignment 1
1. Write a definition of a PLC.
A PLC is an industrial quality microprocessor device that is used to process logic based on the
inputs and then send the proper outputs. Also, these controllers are programmable as often
Patrick Collins, Unit 2 Assign.1, ET2750
1. Write a definition of a programmable logic controller.
A PLC is an industrial quality microprocessor device that is used to process logic based on the inputs
and then send the proper outputs. Also, these control