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Download Abbreviations used in Electronics
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Abbreviations used in Electronics A to EW 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 DIP Dual in-line package DMM Digital multimeter DPDT Double pole double throw Dt or DTL Diode transistor logic Dv or 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 to mW 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 MI 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 MSI Medium scale integrated circuit mV Millivolt mW Milliwatt N to TWT 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 to °F 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
