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Electronics Tutorial for Beginners
ABC of Electronics Offering free comprehensive basic
electronics tutorial. In this Electronics Tutorial we
have explained the basic electronic concepts. Here you
can find 8051 Tutorials & 555 Timer Tutorials which are
commonly used in electronics.
Every effort is made
to keep the website up and running smoothly |
General Electronic terms-R
- RMS value: Rms value of an AC sine wave
is 0.707 times the peak value.
-
- radar Acronym for "radio detection and
ranging"
-
- reactance Its Symbol is "X". Opposition
to current flow without the dissipation of energy.
-
- receiver Unit or piece of device used to
receive information.
-
- rectification Process that converts
alternating current to direct current.
-
- rectifier Diode circuit that converts
alternating current into pulsating direct current.
-
- regulated power supply Power supply that
maintains a regulated and constant output voltage under changing
load conditions.
-
- regulator Device or circuit that
maintains and regulates a desired output under changing
conditions.
-
- relay Electromechanical device that opens
or closes contacts when a current is passed through
a coil. E.g Photo Timer
-
- reluctance Resistance to the flow of
magnetic lines of force.
-
- resistance Symbolized "R" and measured in
ohms. Obstruction in path of current.
-
- resistor Component composed of material
that opposes flow of current.
-
- resistor color code Coding system of
colored stripes on a resistor to indicate the
resistor's value and tolerance value.
-
- resonance Circuit condition that occurs
at the frequency where inductive reactance (XL)
equals capacitive reactance (XC).
-
- reverse bias Bias on a PN junction that
allows only leakage current (minority carriers) to
flow.
-
- reverse breakdown voltage Amount of
reverse bias that will cause a PN junction to break
down and conduct in the reverse direction.
-
- reverse current Current through a diode
when it is reverse biased.
-
- RF Abbreviation for "radio frequency."
-
- rheostat Two terminal variable resistor
used to manage current.
-
- ripple frequency Frequency of the ripple
present in the output of a DC source.
-
- ripple voltage The small changess in Dc
voltage that are left out after filtering in a power
supply.
-
- rise time Time for the leading edge of a
pulse to rise from 10% of its peak value to 90% of
its peak value.
-
- rms Abbreviation for "root mean square"
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