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Adjustable 1.5 A positive voltage regulator (1.25 V-37 V) [62] LM120 LM320 Fixed 1.5 A negative voltage regulator (-5 V, -12 V, -15 V) [63] LM123 LM323 Fixed 3 A, 5-volt positive voltage regulator [64] LM325 Yes Dual ±15-volt voltage regulator [65] LM330 5-volt positive voltage regulator, 0.6 V input-output difference [66] LM333 Yes
For the 12 volt systems, the center contact is the positive terminal and the shell is the negative terminal. Most automobiles connect the negative terminal to the frame of the vehicle (negative ground). 12 volt auto connectors are made to comply with a standard by Underwriters Laboratories for safety. UL2089 was developed to cover the ...
All NEMA 6 devices are three-wire grounding devices (hot-hot-ground) used for 208 and 240 V circuits and rated for 250 V maximum, with the 6-15, 6-20 and 6-30 being grounding versions of the 2-15, 2-20 and 2-30, respectively. The 6-15 resembles the 5-15, but with collinear horizontal pins, spaced 23 ⁄ 32 in (18.3 mm) center-to-center. The 20 ...
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 rpm 33h 4. slow rpm 33L rotation left ...
Only one model remained in the Sixty Special lineup – the $3,054 standard sedan. Both sets of fender-mounted chrome louvers were gone, but roof-mounted ones remained. Cadillac now used a negative-ground battery on a 6-volt system. Sixty Special would only reach 5,700 units for 1946, as it did not go into production until later in the model year.
Since rail signal circuits must be highly reliable, special techniques are used to detect and prevent failures in the relay system. To protect against false feeds, double switching relay contacts are often used on both the positive and negative side of a circuit, so that two false feeds are needed to cause a false signal. Not all relay circuits ...
In 240-volt applications not requiring a neutral conductor, the white wire may be used as the second hot conductor, but must be recolored with tape or by some other method. [ citation needed ] Four-wire flexible equipment connection cords have red as the fourth color; unlike older European practices, color-coding in flexible cords is the same ...
ICs using bipolar junction transistors have V CC (+, positive) and V EE (-, negative) power-supply pins – though V CC is also often used for CMOS devices as well. [ 2 ] : 71 In circuit diagrams and circuit analysis, there are long-standing conventions regarding the naming of voltages, currents, and some components. [ 5 ]