Glossary Terms and Definitions P

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Parallax

Definition: A distortion that is created by looking at an object from an angle.

Parallel

Definitioned: An electrical circuit that has two or more current paths and where each path has only one resistance.

Path

Definition: The route current flows in a circuit.

Peak Value (p)

Definition: The maximum positive or negative value of a current or voltage.

Peak-to-peak (p-p)

Definition:The total value from the positive peak to the negative peak of a current or voltage.

Period

Definition: The time interval of one complete cycle of current or voltage.

Phase

Definition: The relative difference in degrees between a waveform and some reference.

Picoammeter

Definition: An ammeter with the function of an electrometer. A picoammeter is similar to an electrometer due to its low voltage, similar speed (some are faster), less sensitivity, and lower price. Special characteristics of a picoammeter include: logarithmic response and built in voltage source.

Polarity

Definition: A reference to what charge an object has. (Positive or Negative)

Positive(+)

Definition: A charged object that has a deficiency of electrons.

Potentiometer

Definition: A three terminal adjustable resistor.

Power

Definition: The unit used with energy usage.

Power Supply

Definition: A separate unit or the section of a product that furnishes the necessary power to operate the device.

Primary Winding

Definition: The input winding which is connected to the power line in a power transformer.

Printed Circuit Board(PCB)

Definition: An insulated board that has copper strips for conductors. Components are attached through holes and soldered in place.


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