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IEEE 315-1975 / ANSI Standard Y32.2. Annex F: "Cross reference list of Class Designation Letters" compares IEC 113-2:1971 to the IEEE/ANSI standard. * AS 1102 and IEC 60617 for "Graphical Symbols for Electrotechnology".
Some manufacturers preceded the EIA number with a manufacturer's code: CK, ... T – Relay triode, ... 75B1 – Voltage reference tube, ...
Most post-war European thermionic valve (vacuum tube) manufacturers have used the Mullard–Philips tube designation naming scheme. Special quality variants may have the letters "SQ" appended, or the device description letters may be swapped with the numerals (e.g. an E82CC is a special quality version of an ECC82) Note: Typecode explained above.
This AC Power Switching Relay with ZAURA Control reference design features a90-240V AC RMS input voltage range, up to 10 amps of load current, less than 2mA of standby current at 120V AC when in ...
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1938 - Introduces the first relay approved for US Military Applications - the 101 Series, used on Naval Vessels. 1945 - Charles Packard, Chief Engineer and Struthers-Dunn publishes the 1st Edition of - "Relay engineering: a reference book to guide engineers and others in the selection and use of electromagnetic relays". [4]
The driver accused of killing NHL star Johnny Gaudreau and his brother faces more severe charges under a new indictment. Sean M. Higgins, 44, is accused of aggravated manslaughter and other crimes ...
Reed relays are used when operating currents are relatively low, and offer high operating speed, good performance with very small currents that are not reliably switched by conventional contacts, high reliability and long life. Millions of reed relays were used in telephone exchanges in the 1970s and 1980s.