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electronics abbreviations


A (amp)
Ampere

AC
Alternating current

AC/DC
Alternating current or direct current

A/D
Analog to digital

ADC
Analog-to-digital converter

AF
Audio frequency

AFT
Automatic fine tunung

AFC
Automatic frequency control

AFC
Automatic flow controller, used in controlling the flow of gasses under pressure into a vacuum system

AGC
Automatic gain control

Ah
Ampere hour

Ai
Current gain

AM
Amplitude modulation

AM/FM
Amplitude modulation or Frequency modulation

AMM
Analog multimeter

antilog
Antilogarithm

Ap
Power gain

apc
Automatic phase control

Av
Voltage gain

AVC
Automatic volume control

AWG
American wire gauge

B
Flux density

BCD
Binary coded decimal

bfo
Beat frequency oscillator

BJT
Bipolar junction transistor

BW
Bandwidth

c
Centi (10-2)

C
Capacitance or capacitor

CAD
Computer aided design

CAM
Computer aided manufacture

CATV
Cable TV

CB
Common base configuration

CB
Citizen’s band

CC
Common collector

CE
Common emitter

cm
Centimeter

cmil
Circular mil

CPU
Central processing unit

C (Q)
Coulomb

CR cr
Junction diode

CRO
Cathode ray oscilloscope

CRT
Cathode ray tube

CT
Total capacitance

cw
Continuous transmission

d
Deci (10-1)

D/A or D-A
Digital to analog

DC
Direct current

Di or Di
Change in current

DIP
Dual in-line package

DMM
Digital multimeter

DPDT
Double pole double throw

Dt or Dt
Change in time

DTL
Diode transistor logic

Dv or Dv
Change in voltage

DVM
Digital voltmeter

E DC or Erms
Difference in potential

e
Instantaneous difference in potential

ECG
Electrocardiogram

ECL
Emitter coupled logic

EHF
Extremely high frequency

EHV
Extra high voltage

ELF
Extremely low frequency

EMF
Electromotive force

EMI
Electromagnetic interference

EW
Electronic warfare

f
Frequency

FET
Field effect transistor

FF
Flip Flop

fil
Filament

FM
Frequncy modulation

fr
Frequency at resonance

fsk
frequency-shift keying

FSD
Full scale deflection

G
Gravitational force

G
Conductance

G
Giga (109)

H
Henry

H
Magnetic field intensity

H
Magnetizing flux

h
hecto (102)

h
Hybrid

HF
High frequency

hp
Horsepower

Hz
Hertz

I
Current

i
Instantaneous current

IB
DC Base current

IC
DC Collector current

IC
Integrated circuit

Ie
Total emitter current

Ieff
Effective current

IF
Intermediate frequency

Imax
Maximum current

Imin
Minimum current

I/O
Input/output

IR
Infrared

IR
Resistor current

IS
Secondary current

IT
Total current

JFET
Junction field effedt transistor

K
Coefficient of coupling

k
Kilo (103)

kHz
Kilohertz

kV
Kilovolt

kVA
Kilovoltampere

kW
Kilowatt

kWh
Kilowatt-hour

L
Coil, inductance

LC
Inductance-capacitance

LCD
Liquid crystal display

L-C-R
Inductance-capacitance-resistance

LDR
Light-dependent resistor

LED
Light emitting diode

LF
Low frequency

LM
Mutual inductance

LNA
Low noise amplifier

LO
Local oscillator

LSI
Large scale integration

LT
Total inductance

M
Mega (106)

M
Mutual conductance

M
Mutual inductance

m
Milli (10-3)

mA
Milliampere

mag
Magnetron

max
Maximum

MF
Medium frequency

mH
Millihenry

MHz
Megahertz

min
Minimum

mm
Millimeter

mmf
Magnetomotive force

MOS
Metal oxide semiconductor

MOSFET
Metal oxide semiconductor field effect transistor

MPU
Microprocessor unit (mP)

MSI
Medium scale integrated circuit

mV
Millivolt

mW
Milliwatt

N
Number of turns in an inductor

N
Revolutions per minute

n
Nano (10-9)

N
Negative

nA
Nanoampere

NC
Normally closed

NC
No connection

NEG, neg
Negative

nF
Nanofarad

nH
Nanohenry

nm
Nanometer

NO
Normally open

NPN
Negative-positive-negative

ns
Nanosecond

nW
Nanowatt

OP AMP
Operational amplifier

P
Pico (10-12)

P
Power

p
Instantaneous power

P
Positive, also peak

PA
Public address or power amplifier

pA
Picoampere

PAL
Programmable Array Logic

PAM, pam
Pulse amplitude modulation

Pap
Apparent power

Pav
Average power

PCB
Printed circuit board

PCM, pcm
Pulse-code modulation

PDM
Pulse-duration modulation

pF
Picofarad

PLD
Programmable Logic Device

PLL
Phase locked loop

PM
Phase modulation, also Permanent magnet

PNP
Positive-negative-positive

POT, pot
Potentiometer

P-P
Peak to peak

PPM
Pulse-position modulation

PRF
Pulse repetition frequency

PRT
Pulse repetition time

pw
Pulse width

PWM, pwm
Pulse width modulation

Q
Charge, also quality

q
Instantaneous charge

R
Potentiometer

R
Resistance

RAM
Random access memory

RC
Resistance-capacitance, also Radio controlled

rcvr
Receiver

rect
Rectifier

ref
Reference

rf
Radio frequencies

RF
Radio frequencies

RFI
Radio frequency interference

RL
Load resistor

RLC
Resistance-capacitance-inductance

RMS, rms
Root mean square

ROM
Read only memory

rpm
Revolutions per minute

SCR
Silicon controlled rectifier

SHF
Super high frequency

SIP
Single in-line package

SNR
Signal-to-noise ratio

SPDT
Single pole double throw

sq cm
Square centimeter

SSB
Single sideband

SW
Short wave

SWR
Standing-wave ratio

SYNC, sync
Synchronous

T
Tera (1012)

T
Torque

T
Transformer

t
Time in seconds

TC
Time constant, also temperature coefficient

TE
Transverse electric

temp
Temperature

THz
Terahertz

TM
Transverse magnetic

TR
Transmit-receive

TTL
Transistor-transistor logic

TV
Television

TWT
Travelling wave tube

UHF
Ultra high frequency

UHV
Ultra high voltage

UJT
Unijunction transistor

UV
Ultraviolet

V
Vacuum tube

V, v
Volt

v
Instantaneous voltage

VA
Volt ampere

Vav
Voltage (average value)

VBE
DC voltage base to emitter

Vc
Capacitive voltage

VCE
DC voltage collector to emitter

VCO
Voltage controlled oscillator

VHF
Very high frequency

Vin
Input voltage

VL
Inductive voltage

VLF
Very low frequency

Vm, Vmax
Maximum voltage

VOM
Volt ohm milliameter

Vout
Output voltage

Vp
Primary voltage

VS
Source voltage

VSWR
Voltage standing wave ratio

VT
Total voltage

W
Watt

XC
Capacitive reactance

XL
Inductive reactance

Y
Admittance

Z
Impedance

Zin
Input impedance

Zo
Output impedance

Zp
Primary impedance

Zs
Secondary impedance

ZT
Total impedance

kW
Kilohm

MW
Megohm

mA
Microamp

mF
Microfarad

mH
Microhenry

mV
Microvolt

mW
Microwatt

W
Ohm

l
Wavelength

°
Degrees

°C
Degrees centigrade or celcius

°F
Degrees farenheit





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