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52 – AC Circuit Breaker; 52a - AC Circuit Breaker Position (contact open when circuit breaker open) 52b - AC Circuit Breaker Position (contact closed when circuit breaker open) 53 - Exciter or DC Generator Relay; 54 - Turning Gear Engaging Device; 55 - Power Factor Relay; 56 - Field Application Relay; 57 - Short-Circuiting or Grounding Device
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 ...
0A4G – 25 mA avg, 100mA peak Gas triode designed for use as a ripple control receiver; with the cathode tied to the midpoint of a series-resonance LC circuit across live mains, it would activate a relay in its anode circuit while f res is present; 0Y4 – 40 ≤ I ≤ 75 mA Half-wave gas rectifier with a starter anode, 5-pin octal base
B-52 Stratofortress: Hallicrafters: AN/ALT-30: Electronic countermeasure barrage transmitter, updated version of the earlier ALT-15: B-52 Stratofortress: Hallicrafters: AN/ALT-31: Electronic countermeasure barrage transmitter: B-52 Stratofortress: Hallicrafters: AN/ALT-32: Electronic countermeasure barrage communications jammer [72] B-52 ...
Normally closed mercury relay, with coil around top of tube and adjustable angle. A mercury relay (mercury displacement relay, mercury contactor) is a relay that uses mercury as the switching element. They are used as high-current switches or contactors, where contact erosion from constant cycling would be a problem for conventional relay contacts.
The ALLISS module is a fully rotatable antenna system for high power (typically 500 kW only) shortwave radio broadcasting—it essentially is a self contained shortwave relay station. Most of the world's shortwave relay stations do not use this technology, due to its cost (15m EUR per ALLISS module: Transmitter + Antenna + Automation equipment).
GOST 26765.52-87 and its descendant GOST R 52070-2003 are the Soviet and Russian, respectively, equivalents of MIL-STD-1553B. The encoding, data rate, word structure, and control commands are fully identical. GJV289A is the Chinese equivalent of MIL-STD-1553.
HD44780 LCD controller and HD44100 drivers on the back side of a 40266 LCD module. The Hitachi HD44780 LCD controller is an alphanumeric dot matrix liquid crystal display (LCD) controller developed by Hitachi in the 1980s. The character set of the controller includes ASCII characters, Japanese Kana characters, and some symbols in two 40 ...
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