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Direct current that does not change intensity with time
A constant current (steady current, time-independent current, stationary current) is a type of direct current (DC) that does not change its intensity
Constant_current
Two-terminal electronic component that limits current to a specified maximum
A constant-current diode is an electronic device that limits current to a maximal specified value for the device. It is known as a current-limiting diode
Constant-current_diode
Electronic component delivering stable electric current regardless of voltage
two types. An independent current source (or sink) delivers a constant current. A dependent current source delivers a current which is proportional to
Current_source
Unidirectional flow of electric charge
electric current flows in a constant direction, distinguishing it from alternating current (AC). A term formerly used for this type of current was galvanic
Direct_current
further development of the constant current/constant voltage algorithms. Instead of using the constant voltage and current in the entire charging period
Electric_car_charging_methods
Measuring electric potential of a solution as titrant is added
In analytical chemistry, potentiometric titration is a technique similar to direct titration of a redox reaction. It is a useful means of characterizing
Potentiometric_titration
Voltmeter
dropped across a segment of a wire of uniform cross-section carrying a constant current is directly proportional to its length. The potentiometer is a simple
Potentiometer (measuring instrument)
Potentiometer_(measuring_instrument)
Water deionization technique
Operating MCDI at constant current mode can produce freshwater with a stable effluent concentration (see constant voltage vs. constant current for more information)
Capacitive_deionization
Electrical circuit component which amplifies the difference of two analog signals
transmission characteristic of this circuit. The quiescent current has to be constant to ensure constant collector voltages at common mode. This requirement
Differential_amplifier
Safety feature in electrical engineering
"The New Stuff!!! Constant Current Source #1". Instructables. Retrieved 4 July 2012. Current Limiting for Stepper Motors Current limiting resistor calculator
Current_limiting
Type of field-effect transistor
in this constant-current region where device current is virtually unaffected by drain-source voltage. The JFET shares this constant-current characteristic
JFET
Law of classical electromagnetism
generated by a constant electric current. It relates the magnetic field to the magnitude, direction, length, and proximity of the electric current. The Biot–Savart
Biot–Savart_law
Technical standard for piezoelectric sensors
for the same principle are Integrated Circuit Piezo-electric (ICP), Constant Current Line Drive (CCLD), IsoTron or DeltaTron. The electronics of the IEPE
Integrated Electronics Piezo-Electric
Integrated_Electronics_Piezo-Electric
Electrical engineering equation
Bell Labs, models the exponential current–voltage (I–V) relationship of semiconductor diodes in moderate constant current forward bias or reverse bias: I
Shockley_diode_equation
Physical constant in quantum mechanics
The Planck constant, or Planck's constant, denoted by h {\displaystyle h} , is a fundamental physical constant of foundational importance in quantum mechanics:
Planck_constant
System designed to maintain a constant voltage
A voltage regulator is a system designed to automatically maintain a constant voltage. It may use a simple feed-forward design or may include negative
Voltage_regulator
Law of capacity in lead-acid batteries
currents. If Peukert's constant k {\displaystyle k} , the exponent, were equal to unity, the delivered capacity would be independent of the current.
Peukert's_law
Type of rechargeable battery
intercalation. Constant current constant voltage (CC/CV) is the standard method used to charge lithium-ion cells. During the constant current phase, the charger
Lithium-ion_battery
Square root of the mean square
sum directly. The RMS of an alternating electric current equals the value of constant direct current that would dissipate the same power in a resistive
Root_mean_square
Welding process
known as 'autogenous welds', or 'fusion welds' do not require it. A constant-current welding power supply provides electrical energy, which is conducted
Gas_tungsten_arc_welding
Welding process
supplies can be used. The most common classification is constant current power supplies and constant voltage power supplies. In arc welding, the voltage is
Arc_welding
Two-terminal electronic component
polarities. Constant-current diodes These are actually JFETs with the gate shorted to the source, and function like a two-terminal current-limiting analog
Diode
Adjustable linear voltage regulator
mA. For a constant current mode with an input voltage source at VIN at 12 V and a forward voltage drop of VF=3.6 V, the maximum output current will be PMAX
LM317
Physical constant
fine-structure constant), and the Kibble balance has become an instrument for measuring weight from a known current, rather than measuring current from a known
Vacuum_permeability
Device used to provide electricity
fully charged and can be recharged by connection to a constant voltage source or a constant current source, depending on battery type. Simple chargers of
Battery_charger
Physical constant for the strength of gravity induced by a mass
The gravitational constant is an empirical physical constant that gives the strength of the gravitational field induced by a mass. It is involved in the
Gravitational_constant
Electrical circuit used to power a LED
approximately constant over a wide range of operating current; therefore, a small increase in applied voltage greatly increases the current. Datasheets
LED_circuit
Physical constant relating particle kinetic energy with temperature
The Boltzmann constant (kB or k) is the proportionality factor that relates the average relative thermal energy of particles in a gas with the thermodynamic
Boltzmann_constant
Pictogram used to represent various electrical and electronic devices or functions
Controlled Rectifier) Diac (may be a varistor in older schematics) Constant-current diode Opto-isolator: internal LED (left) and photo transistor (right)
Electronic_symbol
Industrial welding process
automatic. A constant voltage, direct current power source is most commonly used with GMAW, but constant current systems, as well as alternating current, can
Gas_metal_arc_welding
Technical standard
transmitter injects a constant current of 3.5 mA into the wires, with the direction of current determining the digital logic level. The current passes through
Low-voltage differential signaling
Low-voltage_differential_signaling
Differential digital logic family
signaling of digital data. The basic principle of CML is that current from a constant-current generator is steered between two alternate paths depending
Current-mode_logic
2.71828…, base of natural logarithms
with Euler's constant, a different constant typically denoted γ {\displaystyle \gamma } . Alternatively, e can be called Napier's constant after John Napier
E_(mathematical_constant)
Universal and unchanging physical quantity
A physical constant, sometimes called a fundamental physical constant or universal constant, is a physical quantity that cannot be explained by a theory
Physical_constant
Integrated circuit logic family
low, and the fanout capability is high. In addition, the essentially constant current draw of the differential amplifiers minimizes delays and glitches due
Emitter-coupled_logic
Electromagnetic phenomenon
constant current. The magnetic dipole moment points through the loop (according to the right hand grip rule), with a magnitude equal to the current in
Dipole
Joining metals using electricity, beneath a granulated flux material
on multiple electrode systems. Constant voltage welding power supplies are most commonly used; however, constant current systems in combination with a
Submerged_arc_welding
Technique of brain electric stimulation therapy
Transcranial direct current stimulation (tDCS) is a form of neuromodulation that uses constant, low-intensity DC electricity delivered via electrodes placed
Transcranial direct-current stimulation
Transcranial_direct-current_stimulation
Type of transistor
mode of operation. Thus, in saturation mode, the FET behaves as a constant-current source rather than as a resistor, and can effectively be used as a
Field-effect_transistor
Form of digital logic family in integrated circuits
of NMOS circuits is their thermal output. Due to the need to keep constant current running through the circuit to hold the transistors' states, NMOS circuits
NMOS_logic
Physical constant: Electric charge of one mole of electrons
In physical chemistry, the Faraday constant (symbol F, sometimes stylized as ℱ) is a physical constant defined as the quotient of the total electric charge
Faraday_constant
Semi-automatic or automatic arc welding process
consumable tubular electrode containing a flux and a constant-voltage or, less commonly, a constant-current welding power supply. An externally supplied shielding
Flux-cored_arc_welding
Circuit designed to copy a current through one active device
current constant regardless of loading. The current being "copied" can be, and sometimes is, a varying signal current. Conceptually, an ideal current
Current_mirror
Type of electrical circuit
The mirrored current is a precise copy of the input current. It may be used as a Wilson current source by applying a constant bias current to the input
Wilson_current_mirror
Transistor that uses both electrons and holes as charge carriers
the base–emitter voltage is approximately constant and that collector current is β times the base current. However, to accurately and reliably design
Bipolar_junction_transistor
Constant current/voltage circuit work by measuring the voltage across and current drawn by the load. The curve representing the power limit for the load
Constant_power_circuit
Electric power transmission system
shafts from a prime mover. The transmission line was operated in a constant-current mode, with up to 5,000 volts across each machine, some machines having
High-voltage_direct_current
Chinese consumer electronics manufacturer
and in 2024 with the Watch 4 Pro. VOOC (Voltage Open Loop Multi-step Constant-Current Charging) is a fast charging method for Oppo phones unveiled in 2014
Oppo
Fixed number that has received a name
A mathematical constant is a number whose value is fixed by an unambiguous definition, often referred to by a special symbol (e.g., an alphabet letter)
Mathematical_constant
Swiss luxury watch manufacturer
Frederique Constant in 2012, was appointed Chief Executive Officer of the Frederique Constant Group in 2018. Frederique Constant currently operates a
Frédérique_Constant
First successful type of transistor, developed in 1947
scarcity of electrons. A small positive current applied to one of the two contacts had an influence on the current which flowed between the other contact
Point-contact_transistor
Definition of the units kg, A, K and mol
units, for the Planck constant (h), the elementary electric charge (e), the Boltzmann constant (kB), and the Avogadro constant (NA), respectively. The
2019_revision_of_the_SI
Purposeful modulation of nervous system activity
primarily electrical stimulation is utilized, and charge-balanced biphasic constant current waveforms or capacitively coupled charge injection approaches are adopted
Neurostimulation
Discrete device in an electronic system
light DIAC (diode for alternating current), Trigger Diode, SIDAC) – often used to trigger an SCR Constant-current diode Step recovery diode Tunnel diode
Electronic_component
Manual arc welding process
power supply used in SMAW has constant current output, ensuring that the current (and thus the heat) remains relatively constant, even if the arc distance
Shielded_metal_arc_welding
Decrease in value at a rate proportional to the current value
positive rate called the exponential decay constant, disintegration constant, rate constant, or transformation constant: d N ( t ) d t = − λ N ( t ) . {\displaystyle
Exponential_decay
Electronic device that converts or regulates electric energy and supplies it to a load
regulated power supply is one that maintains constant output voltage or current despite variations in load current or input voltage. Conversely, the output
Power_supply
Physical laws of electrochemistry
{M}{v}}} (equivalent weight), the larger m will be. In the simple case of constant-current electrolysis, Q = It, leading to m = I t M F v {\displaystyle m={\frac
Faraday's laws of electrolysis
Faraday's_laws_of_electrolysis
DC linear voltage regulator
the reference voltage, the drive to the power FET changes to maintain a constant output voltage. Low-dropout (LDO) regulators operate similarly to all linear
Low-dropout_regulator
Fabrication process for joining materials
be used. The most common welding power supplies are constant current power supplies and constant voltage power supplies. In arc welding, the length of
Welding
Accounting focused on inflation
of constant purchasing power in terms of the monthly published Consumer Price Index. This does not result in capital maintenance in units of constant purchasing
Inflation_accounting
Type of field-effect transistor
leakage current, the insulator can be made thinner by choosing a material with a higher dielectric constant. To see how thickness and dielectric constant are
MOSFET
Solid-state electrically operated switch also used as an amplifier
an electronic circuit. A voltage or current applied to one pair of the transistor's terminals controls the current through another pair of terminals. Because
Transistor
Method of chemical analysis
coulometric titration keeps the current constant using an amperostat. Potentiostatic coulometry holds the electric potential constant during the reaction using
Coulometry
Type of electrical current converter
voltage (Vo) into current sources. At a short time scale, an inductor can be considered as a current source as it maintains a constant current. This conversion
Ćuk_converter
Lead-acid battery charging procedure
The three phases are: I-phase (constant electric current), Uo-phase (constant over-voltage), and U-phase (constant voltage). The purpose is to fully
IUoU_battery_charging
Classical method used to design feedback control systems
becomes a voltage controlled current source. With constant current, when two windings are energized, they share the current and the variation of torque
Minor_loop_feedback
Constants describing characteristics of electrical motors
The motor size constant ( K M {\displaystyle K_{\text{M}}} ) and motor velocity constant ( K v {\displaystyle K_{\text{v}}} , alternatively called the
Motor_constants
Flexible strip of surface mounted light-emitting diodes
choice of SMD, driving voltage, control type, and whether it is constant current or constant voltage layout. Uncoated LED tape is not considered to have any
LED_strip_light
Any of several physical constants used in astronomy
adopted a new current set, and recognizing that new observations and techniques continuously provide better values for these constants, they decided to
Astronomical_constant
Concept in celestial mechanics
gravitational parameter μ of a celestial body is the product of the gravitational constant G and the mass M of that body. For two bodies, the parameter may be expressed
Standard gravitational parameter
Standard_gravitational_parameter
Electronic component
Ripple current is the AC component of an applied source (often a switched-mode power supply) whose frequency may be constant or varying. Ripple current causes
Capacitor
Direct current electrical machine
current. The technical description is "a cross-field direct current machine designed to utilize armature reaction". A metadyne can convert a constant-voltage
Metadyne
Short duration voltage transient in an electrical circuit
in current (current spike). However, some voltage spikes may be created by current sources. Voltage will increase as necessary so that a constant current
Voltage_spike
Type of magnetometer
a near-zero magnetic field. There are two main types of SQUID: direct current (DC) and radio frequency (RF). RF SQUIDs can work with only one Josephson
SQUID
Type of DC-to-DC converter
inductor current flows through the load. If we assume zero voltage drop in the diode, and a capacitor large enough for its voltage to remain constant, the
Buck–boost_converter
Diode that allows current to flow in the reverse direction at a specific voltage
breakdown voltage of diode D is stable over a wide current range and holds Uout approximately constant even though the input voltage may fluctuate over
Zener_diode
Piece of equipment used to weld
and current modulation into a single mobile unit mounted on a vehicle or towed trailer. Welding machines are usually classified as constant current (CC)
Welding_power_supply
Devices that measure magnetic field strength using the Hall effect
sensors are used for proximity sensing, positioning, speed detection, and current sensing applications and are common in industrial and consumer applications
Hall_effect_sensor
Electrical circuit
to copy the basic uncompensated BJT-based log amplifier, but use a constant current source instead of resistor R {\displaystyle R} for this copy, and then
Log_amplifier
Dimensionless number that quantifies the strength of the electromagnetic interaction
fine-structure constant, also known as the Sommerfeld constant, commonly denoted by α (the Greek letter alpha), is a fundamental physical constant that quantifies
Fine-structure_constant
Type of voltage regulator
in a constant voltage output. The regulating circuit varies its resistance, continuously adjusting a voltage divider network to maintain a constant output
Linear_regulator
DC-to-DC power converter with an output voltage greater than its input voltage
inductor current flows through the load. If we consider zero voltage drop in the diode and a capacitor large enough for its voltage to remain constant, the
Boost_converter
Electronic device/component that increases the strength of a signal
design would probably use some form of active load here, such as a constant-current sink). So far, all of the amplifier is operating in class A. The output
Amplifier
IT cooling practice
of oil as a coolant and insulator is in the patent submitted for a Constant Current Transformer in 1899 by Richard Fleming of Lynn, Massachusetts, assignor
Immersion_cooling
Type of resistor whose resistance varies with temperature
allows them to be used for limiting current to cold circuits, e.g. for inrush current protection, or for limiting current to hot circuits, e.g. to prevent
Thermistor
Extension of scanning tunneling microscopy
surfaces. The tip is rastered across a surface and (in constant current mode), a constant current is maintained between the tip and the sample by adjusting
Scanning tunneling spectroscopy
Scanning_tunneling_spectroscopy
Value representing energy density of space
the cosmological constant (usually denoted by the Greek capital letter lambda: Λ), alternatively called Einstein's cosmological constant, is a coefficient
Cosmological_constant
Technology for constructing integrated circuits
time in which current will find a path directly from VDD to ground, hence creating a short-circuit current, sometimes called a crowbar current. Short-circuit
CMOS
Measure of change in amplitude and phase of a wave
the voltage, the current in a circuit, or a field vector such as electric field strength or flux density. The propagation constant itself measures the
Propagation_constant
Resistor Inductor Capacitor Circuit
hand, if driven by a constant current, there would be a maximum in the voltage which would follow the same curve as the current in the series circuit
RLC_circuit
Type of resistor, usually with three terminals
not the geometry of the resistive element) has a resistive element of constant cross-section, resulting in a device where the resistance between the contact
Potentiometer
Electronic circuit
output current will change. Hence, to keep the output current constant despite fluctuations in VCC, the circuit should be driven by a constant current source
Widlar_current_source
Semiconductor diode
primitive Schottky diodes. When sufficient forward voltage is applied, a current flows in the forward direction. A silicon p–n diode has a typical forward
Schottky_diode
English experimental music group
occultism, and various literary traditions. Tibet has been the only constant member of Current 93, with a wide variety of collaborators joining in over the years
Current_93
Four-layer solid-state current-controlling device
or semiconductor controlled rectifier (SCR) is a four-layer solid-state current-controlling device. The name "silicon controlled rectifier" is General
Silicon_controlled_rectifier
Observation in physical cosmology
Though the Hubble constant H0 is constant at any given moment in time, the Hubble parameter H, of which the Hubble constant is the current value, varies with
Hubble's_law
Type of diode
The DIAC (diode for alternating current) is a diode that conducts electrical current only after its breakover voltage, VBO, has been reached momentarily
DIAC
Vacuum tube used to display images
depends on both the anode voltage and the electron beam current and in practise the latter is constant, while the former is controlled by varying the difference
Cathode_ray_tube
Device in signal processing
the start event occurs, the capacitor is charged with a constant current I1; the constant current causes the voltage v on the capacitor to increase linearly
Time-to-digital_converter
CONSTANT CURRENT
CONSTANT CURRENT
Boy/Male
Latin English
Constant.
Girl/Female
Australian, French, German, Latin, Spanish
Constancy; Steadfastness
Girl/Female
British, English
Similar to Constance; Used by 16th and 17th Century Puritans
Boy/Male
Latin
Constant.
Surname or Lastname
English and French
English and French : from the medieval female personal name Constance, Latin Constantia, originally a feminine form of Constantius (see Constant), but later taken as the abstract noun constantia ‘steadfastness’.English and French : habitational name from Coutances in La Manche, France, which was named Constantia in Latin (see above) in honor of the Roman emperor Constantius Chlorus, who was responsible for fortifying the settlement in ad 305.
Female
English
English form of Latin Constantia, CONSTANCE means "steadfast."Â
Boy/Male
English Latin
Steady; stable.
Girl/Female
Australian, German, Latin, Spanish, Swedish
Constancy; Steadfastness
Girl/Female
Latin American English French Shakespearean
Firm of purpose. Constancy, from the Latin Constantia.
Female
Romanian
Romanian form of Latin Constantia, CONSTANTA means "steadfast."
Girl/Female
American, Australian, British, Christian, Dutch, English, French, German, Latin, Portuguese, Shakespearean, Swedish
Constancy; Steadfastness
Girl/Female
Spanish Italian
Constant.
Boy/Male
Tamil
Nityagopal | நிதà¯à®¯à®•à¯‹à®ªà®¾à®²Â
Constant
Nityagopal | நிதà¯à®¯à®•à¯‹à®ªà®¾à®²Â
Boy/Male
Tamil
Constant
Surname or Lastname
French and English
French and English : from a medieval personal name (Latin Constans, genitive Constantis, meaning ‘steadfast’, ‘faithful’, present participle of the verb constare ‘stand fast’, ‘be consistent’). This was borne by an 8th-century Irish martyr. This surname has also absorbed some cases of surnames based on Constantius, a derivative of Constans, borne by a 2nd-century martyr, bishop of Perugia. Compare Constantine.English : perhaps also a nickname from Old French constant ‘steadfast’, ‘faithful’.
Boy/Male
Australian, British, Danish, English, French, German, Italian, Latin, Swedish, Swiss
Steadfast; Constant
Male
Polish
Polish form of Latin Constans, KONSTANTY means "steadfast."
Girl/Female
Latin English
Firm of purpose. Constancy, from the Latin Constantia.
Female
Spanish
Spanish form of Latin Constantia, CONSTANZA means "steadfast."
Male
French
French and Romanian form of Latin Constantinus, CONSTANTIN means "steadfast."Â
CONSTANT CURRENT
CONSTANT CURRENT
Boy/Male
Hindu, Indian, Marathi
A King
Male
Babylonian
, father.
Boy/Male
American, Australian, British, Danish, Dutch, English, French, German, Italian, Jamaican, Netherlands, Swedish, Teutonic
Bright Fame; Form of Robert; Famous
Girl/Female
Tamil
Goddess Parvati
Female
Greek
(ΗμÎÏα) Greek name HEMERA means "day." In mythology, this is the name of a primeval goddess of day, the daughter of Erebos and Nyx, and sister-wife of Aither.
Male
English
Irish surname transferred to unisex forename use, from an Anglicized form of Gaelic Ó Séaghdha ("descendant of Séaghdha"), possibly SHEA means "hawk-like."Â
Surname or Lastname
English
English : variant of Chadwick.
Boy/Male
Muslim/Islamic
Abiding (name of companion)
Boy/Male
Irish
Serves Saint Ruadhan.
Boy/Male
British, English
Devoted to God
CONSTANT CURRENT
CONSTANT CURRENT
CONSTANT CURRENT
CONSTANT CURRENT
CONSTANT CURRENT
n.
That which is not subject to change; that which is invariable.
adv.
Constant; continual.
a.
Resolute; persevering; constant; steady.
a.
harmonizing together; accordant; as, consonant tones, consonant chords.
v. t.
Remaining unchanged or invariable, as a quantity, force, law, etc.
adv.
With constancy; steadily; continually; perseveringly; without cessation; uniformly.
a.
Not constant; not stable or uniform; subject to change of character, appearance, opinion, inclination, or purpose, etc.; not firm; unsteady; fickle; changeable; variable; -- said of persons or things; as, inconstant in love or friendship.
n.
A superior wine, white and red, from Constantia, in Cape Colony.
v. t.
Consistent; logical.
n.
A constant irritating desire.
v. t.
Not liable, or given, to change; permanent; regular; continuous; continually recurring; steadfast; faithful; not fickle.
n.
The quality or state of being inconstant; want of constancy; mutability; fickleness; variableness.
a.
Continued without intermission; perpetual; ceaseless; constant.
a.
Not constant; inconstant; fickle; changeable.
n.
A quantity that does not change its value; -- used in countradistinction to variable.
v. t.
Firm; solid; fixed; immovable; -- opposed to fluid.
n.
An expression of assent to a bill or motion; an affirmative vote; also, a member who votes "Content.".
n.
The state or quality of being constant or steadfast; freedom from change; stability; fixedness; immutability; as, the constancy of God in his nature and attributes.
a.
A day of the present or current month; as, the sixth instant; -- an elliptical expression equivalent to the sixth of the month instant, i. e., the current month. See Instant, a., 3.
n.
An invariable quantity; a constant.