- X
Symbol for reactance.
- X axis
Horizontal axis.
- Y
Symbol for admittance.
- Y axis
Vertical axis.
- Z axis
Axis perpendicular to both X and Y axes.
- zener diode
Semiconductor diode in which reverse breakdown voltage current causes the diode to develop a constant voltage. Used as a clamp for voltage regulation.
- zeroing
Calibrating a meter so that it shows a value of zero when zero is being measured.
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