Resistors are electrical components that oppose the flow of either direct or alternating current. They are used to protect, operate, or control circuits. Voltages can be divided with the use of resistors. In combination with other components, resistors can also be used to make electrical waves into shapes most suited to the designer’s requirements. Resistors can have a fixed value of resistance, or they may be variable or adjustable within a certain range. Typically, resistor values are expressed in ohms, a unit of resistance. Materials of construction for resistors include carbon composition, carbon film, ceramic composition, metal alloy, metal film, metal oxide, thick film, thin film, and wire. Common lead types include axial leads, gull-wing leads, J-leads, radial leads, screw terminals, and tab terminals. Resistors without leads are also available. |
Products & Services Related to Resistors
Chip Resistors
Chip resistors are passive resistors with a form factor of an integrated circuit (IC) chip. Typically, they are manufactured using thin-film technology.
Current Sensing Resistors
Current sensing resistors convert the current flowing through it to a voltage drop. Monitoring or measuring this voltage drop allows the current through the resistor to be measured. Applications for current sensing resistors include power supplies, receptacles, and battery packs.
Digital Potentiometers
Digital potentiometers are three-terminal resistors with an adjustable center connection. To set the output resistance, a digital signal is sent through an electrical interface.
Power Resistors
Power resistors are used in power generation and distribution, high-voltage applications, control systems, and other power system applications. They include load banks, grounding resistors, and dynamic braking resistors.
Resistor, Capacitor Networks
Resistor, capacitor networks (RC networks) are integrated circuits (ICs) that contain resistor-capacitor arrays in a single chip.
Resistors and Potentiometers
Resistors and potentiometers are passive electronic components that oppose the flow of either alternating current (AC) or direct current (DC).
Shunt Resistors
Shunts resistors are connected in parallel with an instrument or component to divert electrical current. They provide an alternate path for current in case of failure.
|
Engineering Web: Resistors - Machine Design
Pages: 1 - 3 of 25
Machine Design -
... set by current limiting resistors, not the lab power supply. A low current setting on the supply does not always provide surge protection from the filter capacitors. Current limiting resistors ensure ...
|
Machine Design -
Motors do not have to operate at the same speed, however, since adjustable resistors can vary the motor field voltage. Semiconverters have diode rectifiers in one side of the bridge and thyristors in ...
|
Machine Design -
To minimize this condition, phase-controlled modules can be supplied with RFI filter networks consisting of resistors, capacitors, and inductances. The level of power determines the bulk and cost of ...
|
|
|
|
