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2. High-voltage interface relay - Wikipedia

   en.wikipedia.org/wiki/High-voltage_interface_relay

   High voltage interface relays, a.k.a., interface relays: [1] [2] or coupling relays or insulating interfaces [3] [4] is a special class of electrical relays designed to provide informational and electrical compatibility between functional components isolated from each other and not allowing for a direct connection due to a high difference of potentials.

3. DIN 72552 - Wikipedia

   en.wikipedia.org/wiki/DIN_72552

   from 2nd battery and 12/24 V relay: 31 return to battery- or direct to ground 31a return to battery- 12/24 V relay 31b return to battery- or ground through switch 85d 31c return to battery- 12/24 V relay 31, 31a Electric motors; 32 return 31 33 main terminal (swap of 32 and 33 is possible) 30 33a limit 33b field 54e 33f 2. slow rpm: 33g 3. slow ...

4. ANSI device numbers - Wikipedia

   en.wikipedia.org/wiki/ANSI_device_numbers

   Today, microprocessor-based relays can perform many protective functions in one device. [1] When one device performs several protective functions, it is typically denoted "11" by the standard as a "Multifunction Device", but ANSI Device Numbers are still used in documentation like single-line diagrams or schematics to indicate which specific ...

5. Relay - Wikipedia

   en.wikipedia.org/wiki/Relay

   A relay Electromechanical relay principle Electromechanical relay schematic showing a control coil, four pairs of normally open and one pair of normally closed contacts An automotive-style miniature relay with the dust cover taken off. A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple ...

6. Category:Relays - Wikipedia

   en.wikipedia.org/wiki/Category:Relays

   Solid-state relay; Starter solenoid; U. Uniselector; W. Wire spring relay This page was last edited on 28 November 2019, at 01:34 (UTC). Text is available ...

7. List of vacuum tubes - Wikipedia

   en.wikipedia.org/wiki/List_of_vacuum_tubes

   1R5/DK91 – Pentagrid converter, anode voltage in the 45...90 volt range. 1S4 – Power output pentode Class-A amplifier, anode voltage in the 45...90 volt range. 1S5 – Sharp-cutoff pentode Class-A amplifier, and diode, used as detector and first A.F. stage in battery radio receivers. Anode voltage in the 67...90 volt range.