TLE Flashcards
The basic unit of current
ampere
the opposition to the flow of electrons
resistance
a scheme to determine the value of resistors by color bands printed on their bodies as code
resistor color coding
the fourth color in the 3 band color coding that indicates the percentage of deviation from its color coded value
tolerance
An electrical pressure that pushes current to flow within a load through a conductor.
Voltage
An electronic instrument used to measure resistance of a component or the entire circuit.
Ohmmeter
An electronic component that is used to offer opposition to current in an electrical circuit.
Resistor
A portion in the ohmmeter where the actual reading is multiplied by the range value.
Range Multiplier
unit of voltage
Volt
A wire, cable, or other body or medium that is suitable for carrying electric current
Conductor
A branch of science and technology that deals with the controlled flow of electrons
Electronics
A component designed intentionally to have a definite amount of resistance.
Resistor
An electric current that flows in one direction
Direct Current
The electrical pressure that existed between two points and capable of producing a flow of current when a close circuit is connected between the points.
Voltage
separated or individual components
Discrete Components
connecting two lengths of conductor
Splicing
An instrument that measures the amount of electromotive force in a component or circuit.
Voltmeter
A material that serves as insulator because it has poor electric conductivity
Dielectric Material
A positive electrode of semiconductor device
Anode
Changes the amplitude of a signal between input and output
Active Component
Circuit that increases the voltage, current, or power of a signal
Amplifier
Magnitude or size of a signal voltage or current
Amplitude
Positive electrode or terminal of a device. The “P” material of a diode.
Anode
The region that lies between the emitter and collector of a bipolar junction transistor (BJT)
Base
A method of biasing a BJT in which the bias voltage is supplied to the base by means of a resistor
Base Biasing
A DC voltage applied to a device to controls it operation
Bias
– 3-Terminal device in which emitter to collect current is controlled by base current
Bipolar Junction Transistor
Portion of total current flowing in one path of a parallel circuit
Branch Current
Circuit using four diodes to provide full wave rectification. Converts and AC voltage to a pulsating DC voltage.
Bridge Rectifier –
Capacitor used to provide an AC ground at some point in a circuit
Bypass Capacitor
To adjust the correct value of a reading by comparison to a standard.
Calibration
The ability of a capacitor to store an electric charge. Unit is the Farad
Capacitance
Electronic component having capacitive reactance
Capacitor
Quantity of electrical energy
Charge
– Interconnection of components to provide and electrical path between 2 or more components
Circuit
Circuit having a complete path for current flow
Close Circuit
Semiconductor region in a bipolar junction transistor through which a flow of charge carriers leaves the base region
Collector
Measured in amperes, the flow of electrons through a conductor. Also known as electron flow
Current
Amplifier to increase signal current
Current amplifier
2 terminal device that conducts in only 1 direction
Diode
Basic unit of capacitance
Farad
Intentional or accidental conducting path between an electrical system or circuit and the earth
Ground
Does not amplify a signal. (Resistors, capacitors and inductors)
Passive component
Term derived from transfer resistor. It can be used as an amplifier or as an electronic switch
Transistor
formula of Resistance
R= V/I
R= P/I²
R= V²/P
formula of current
I= V/R
I= √P/R (Square root of Power divided by Resistance)
I= P/V
formula of voltage
V= I x R
V= P/I
V= √PxR (Square root of Power multiplied by Resistance)
formula of power
P = I² x R
P = V x I
P = V²/R
