- Industri: Aviation
- Number of terms: 16387
- Number of blossaries: 0
- Company Profile:
Aviation Supplies & Academics, Inc. (ASA) develops and markets aviation supplies, software, and books for pilots, flight instructors, flight engineers, airline professionals, air traffic controllers, flight attendants, aviation technicians and enthusiasts. Established in 1947, ASA also provides ...
An electrical switch that has three sets of contacts, controlled by a single operating handle. A three-pole, single-throw switch can select two conditions, such as on and off, in three separate circuits.
Industry:Aviation
An electrical switch whose operating control is a rocker, split so one half of the switch can be opened without affecting the other half. Split-rocker switches are used as aircraft master switches. The battery can be turned on without turning on the alternator, but the alternator cannot be turned on without also turning on the battery. The alternator can be turned off without turning off the battery, but the battery cannot be turned off without also turning off the alternator.
Industry:Aviation
An electrical switch with a control handle in the form of a bat, or lever, sticking out of the front of the switch. It is customary when installing a toggle switch to move the toggle up to turn the switch ON, and down to turn the switch OFF.
Industry:Aviation
An electrical switch with its contacts mounted on a spring. The contacts snap open quickly, even when the switch control is moved slowly. Quick-break switches are used to control circuits containing inductive loads. If the switch contacts were opened slowly, the inductance in the circuit would keep current flowing across the contacts as they separate. This would form an arc and damage the contacts.
Industry:Aviation
An electrical switch with three positions, CIRCUIT 1, OFF, and CIRCUIT 2. A single-pole, double-throw (SPDT) switch can select one of three conditions in a single circuit, and a double-pole, double-throw (DPDT) switch can select one of three conditions in two circuits with the movement of a single control.
Industry:Aviation
An electrical test instrument that can be used to measure voltage, current, and resistance. The indication is in the form of a liquid crystal display in discrete numbers.
Industry:Aviation
An electrical transformer used for measuring or control purposes. The primary winding of a current transformer is installed in series with the electrical load, and the voltage produced in the transformer secondary winding is proportional to the amount of load current.
Industry:Aviation
An electrical transformer used to feed an alternating current signal from a pickup device into the input stage of an electronic system. The input transformer isolates the pickup device from the input circuit and matches the impedance of the two devices.
Industry:Aviation
An electrical transformer used to isolate a piece of electrical equipment from the power line. An isolation transformer has the same number of turns in its secondary winding as it has in its primary. This one-to-one turns ratio causes the output voltage and current to be the same as that of the input.
An isolation transformer electrically isolates equipment connected to its secondary winding from the power line. This isolation prevents the danger of electrical shock when working on the equipment.
Industry:Aviation
An electrical transformer whose core and coils are immersed in oil. The oil circulates through the transformer and carries heat from the core and windings to the housing. Air flowing around the housing removes this heat. The housings for small oil-cooled transformers have a smooth outer surface, but the housing of larger units is sometimes finned to assist in carrying away heat.
Industry:Aviation
