MIL-R-5757J
Dropout value (voltage), specified: As the current or voltage on an operated relay is decreased, the value at or above which all relay contacts must restore to their unoperated positions.
Hermetically sealed relay: A relay contained within an enclosure that is sealed by fusion to insure a low rate of gas leakage. This usually refers to metal-to-metal, or metal-to-glass sealing.
Hold value (voltage), specified: As the current or voltage on an operated relay is decreased, the value which must be reached before any contact change occurs.
Miss: Failure to establish the intended circuit conditions (high or low output resistance, as applicable). Normally closed contacts: Those contacts that are closed with the relay de-energized.
Normally open contacts: Those contacts that are open with the relay de-energized.
Operate time: The interval between the application of a step function input signal and closing of all normally open contacts. Bounce time is not included.
Operation, relay: A relay operation is defined as when a relay changes from an initial condition to the prescribed condition. For example, normally open to closed or vice versa. Therefore, a relay operation is one half of a cycle.
Pickup value (voltage), specified: As the current or voltage on an unoperated relay is increased, the value
(voltage) at or below which all contacts must function.
Polarized relay: A relay, the operation of which is primarily dependent upon the direction (polarity) of the energizing current(s) and the resultant magnetic flux. The opposite of neutral relay. Also called "Polar Relay".
Relay: An electric device that is designed to interpret input conditions in a prescribed manner and after specified conditions are met to respond to cause contact operation or similar abrupt change in an associated electric control circuit. NOTE: 1) Inputs are usually electric, but may be mechanical, thermal or other quantities. 2) A relay may consist of several units, when responsive to specified inputs, the combination providing the desired performance characteristics..
Relay, differential: A double input relay which is actuated by the polar signal resulting from the algebraic addition of dual inputs.
Relay, null-seeking: A relay of double-throw configuration and a stable centeroff position. Either side of the double-throw contact can be activated by and for the duration of the polar actuating signal.
Relay, sensitive: A relay that operates on low input power commonly defined as 100 milliwatts or less. Release time: The interval between the trailing edge of a step function input signal and closing of all normally
closed contacts. Bounce time is not included.
Saturation: The condition attained in a magnetic material when an increase in magnetizing (coil) current produces no appreciable increase in flux.
Shelf life: A period of time a relay can be stored unused before detrimental changes occur which would cause the item not to properly perform its function within the requirements of this specification.
Silicone: Any of a group of semi-inorganic polymers based on the structural unit R2SiO, where R is an organic group, characterized by wide range thermal stability, high lubricity, extreme water repellence, and physicochemical inertness, used in adhesives, lubricants, protective coatings, paints, electrical insulation, synthetic rubber, and prosthetic replacements for bodily parts.
Sensitivity: Pickup value expressed in terms of milliwatts (or watts).
Time, contact bounce: The time interval from initial closure of a contact to the end of bounce during pickup and dropout.
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