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RELAY COIL
A relay is an electrical switch that uses
an electromagnet for automatically off/on the switch instead of a person moving the switch.
How it works…???
Relays are switches that open and close circuits
electromechanically or electronically. They controlled by opening and closing contacts in another circuit. If relay contact is normally open (NO), there is an open contact when the relay is not energized. When a relay contact is Normally Closed (NC), there is a closed contact when the relay is not energized. In either case, applying electrical current to the contacts will change their state.
WIRE WOUND RESISTER
A wire wound resistor element is generally
made by winding a metal wire around a ceramic, plastic, or fiberglass core. The ends of the wire are soldered or welded to two caps, attached to the ends of the core.
How it works…???
A resistor is a passive two-terminal electrical
component that implements electrical resistance as a circuit element. Resistors act to reduce current flow and at the same time, act to lower voltage levels within circuits.
Applications
Battery-testing equipmentPower supplies Medical EquipmentTelecommunicationsMotor controlsIndustrial power drivesComputers and peripheralsEngine monitoring systems
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