adjustable resistor definition
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- variable resistor. A rheostat. variable resistor - Computer Definition. An electronic component that is used to vary the amount of current that flows through a circuit. It works by sliding a wiper terminal across a resistive material, typically a thin film or chunk of carbon or a resistive wire made of nickel chromium or tungsten alloys.
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- Adjustable-Rate Mortgage - ARM. An adjustable-rate mortgage, is a type of mortgage in which the interest rate applied on the outstanding balance varies throughout the life of the loan. Normally, the initial interest rate is fixed for a period of time, after which it resets periodically, often every year or even monthly.
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Variable / Adjustable Resistor or Potentiometer - notes or overview about the adjustable resistor or variable resistor used as a trimmer resistor and the circuit symbol. Variable or adjustable resistors are often needed within electronic circuits to act as a preset control within the circuit.
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Rheostat A rheostat is a variable resistor which is used to control current. They are able to vary the resistance in a circuit without interruption.The construction is very similar to the construction of a potentiometer s. It uses only two connections, even when 3 terminals (as in a potentiometer) are present. rheostat is a variable resistor which is used to control current. They are able to vary the resistance in a circuit without interruption.
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LED circuit Series resistors are a simple way to stabilize the LED current, but energy is wasted in the resistor. Miniature indicator LEDs are normally driven from low voltage DC via a current-limiting resistor. Currents of 2 mA, 10 mA and 20 mA are common.
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Resistors That's why we define resistance more precisely as the voltage in volts required to make a current of 1 amp flow through a circuit. If it takes 500 volts to make 1 amp flow, the resistance is 500 ohms (written 500 ω). You might see this relationship written out as a mathematical equation: V = I × R.
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variable resistor Variable Resistor. 1  As the wiper is moved across the body of the device, the resistance increases between the wiper terminal and one end terminal and decreases between the wiper and the other end. 2  Potentiometers are variable resistors commonly used to control the volume on a radio or music system.
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resistor Resistors can be fabricated in a variety of ways. The most common type in electronic devices and systems is the carbon-composition resistor. Fine granulated carbon (graphite) is mixed with clay and hardened. The resistance depends on the proportion of carbon to clay; the higher this ratio, the lower the resistance.esistors can also be used to provide a specific voltage for an active device such as a transistor. All other factors being equal, in a direct-current (DC) circuit, the current through a resistor is inversely proportional to its resistance, and directly proportional to the voltage across it.
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Automatic gain control Automatic gain control. Schematic of an AGC used in the analog telephone network; the feedback from output level to gain is effected via a Vactrol resistive opto-isolator.
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resistance 3. a. the tendency of a conductor to oppose the flow of current, causing electrical energy to be changed into heat. Symbol: R. b. a conductor or coil offering such opposition; resistor. 4. Psychoanal. opposition to an attempt to bring repressed thoughts or feelings into consciousness.
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Resistors For the circuit conditions of 10 volts and 2 amps, the resistor’s resistance must be 5 ω. If we were designing a circuit to operate at these values, we would have to specify a resistor with a minimum power rating of 20 watts, or else it would overheat and fail.
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resistor Resistors can also be used to provide a specific voltage for an active device such as a transistor. All other factors being equal, in a direct-current (DC) circuit, the current through a resistor is inversely proportional to its resistance, and directly proportional to the voltage across it.
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Ohm In many cases the resistance of a conductor in ohms is approximately constant within a certain range of voltages, temperatures, and other parameters. These are called linear resistors. In other cases resistance varies (e.g., thermistors).
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Pull up resistor / Pull down resistor Pull up resistor / Pull down resistor. Pull-up resistors are resistors which are used to ensure that a wire is pulled to a high logical level in the absence of an input signal.
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- Rheostat is simply a variable resistor. i.e., typically 3 contacts, either end of resistive element and slider contact that moves along resistive element. So, in old radios wo … uld typically be used as a volume control.   A variable resistor may be used to control current, in which case it is called a rheostat. rheostat is a resistor with variable resistance.There are many type of rheostat,involved of a rotary-type rheostat and a sliding rheostst.I dunn know much about the rotary-t … ype rheostat but I can tell u how does a sliding rheostat work.
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adjustable rate mortgage Definition of adjustable rate mortgage. : a mortgage having an interest rate which is usually initially lower than that of a mortgage with a fixed rate but is adjusted periodically according to the cost of funds to the lender.
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Resistor This is not a resistor technology; it is an electronic circuit topology. Special varieties. Cermet; Phenolic; Tantalum; Water resistor; Variable resistors Adjustable resistors. A resistor may have one or more fixed tapping points so that the resistance can be changed by moving the connecting wires to different terminals.
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- Check your grammar now! : an adjustable assembly of resistor or capacitor units in decimal steps facilitating selection by plug or switch of any multiple of the least unit up to the aggregate of all units.
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Driver circuits and Op-amps A small input line level signal 100mV to 1V is amplified by the op-amp driver circuit. A correctly designed driver circuit is capable of amplifying the signal (perfectly) to the exact height of the + - V rail supply.ain The Voltage gain of an op-amp can be adjusted by resistors R1 and R2. Op-amp gain = R1/R2 +1. Power amplifier gains will typically be between 20:1 and 40:1. There is no international standard for the set gain of amplifiers. In domestic system amplifiers the loudness level is simply adjusted with the Volume control.
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Resistors and Their Uses Resistors and Their Uses. Resistors are electrical components that are used in electrical circuits to manipulate current flow. They are individual components and are measured in ohms that range from less than 1 ohm to well over millions of ohms. The higher the value of the resistor, the more resistance it has against current flow.
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Resistor A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.
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Resistor Resistors act to reduce current flow, and, at the same time, act to lower voltage levels within circuits. In electronic circuits, resistors are used to limit current flow, to adjust signal levels, bias active elements, and terminate transmission lines among other uses.o, for example, a 10 ohm resistor connected in parallel with a 5 ohm resistor and a 15 ohm resistor will produce the inverse of 1/10+1/5+1/15 ohms of resistance, or 1/(.1+.2+.067)=2.725 ohms.
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Fixed resistor Fixed resistor definition A resistor having a fixed, defined electrical resistance which is not adjustable. In an ideal world a perfect resistor would have a constant ohmic resistance under all circumstances.
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resistor Part of the Electronics glossary: A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. Resistors can also be used to provide a specific voltage for an active device such as a transistor.
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Rheostat What is a rheostat? A rheostat is a variable resistor which is used to control current. They are able to vary the resistance in a circuit without interruption. The construction is very similar to the construction of a potentiometers. It uses only two connections, even when 3 terminals (as in a potentiometer) are present.