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National Stock Number:
5905-00-578-0291
Federal Supply Class:
5905
National Item Identification Number:
005780291
Description:
RESISTOR,VARIABLE,WIRE WOUND,PRE
Detail:
A resistor in which a sliding or rolling contact moves over an exposed area of the resistive element to change the ohmic value of the output. The functional tolerance (linearity) of the output is equal to or less than plus or munus 1 percent on linear outputs. Specified outputs such as sine, cosine, tangent, etc., shall be considered to be precision. For items having manually positioned taps designed to be set and fixed prior to use, see RESISTOR, ADJUSTABLE, For items with step by step variation, see RHEOSTAT and RESISTOR, STEP BY STEP. For tandem-mounted items designed to function together as an attenuator (and rated accordingly), see ATTENUATOR, VARIABLE. Excludes RESISTOR (1), VARIABLE, NONWIRE WOUND, NONPRECISION; RESISTOR (1), VARIABLE, NONWIRE WOUND, PRECISION; and RESISTOR (1), VARIABLE, WIRE WOUND, NONPRECISION.
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Manufacturer Information:
| 55-3435 | 18065 | SAMARIUS PRECISION INSTRUMENTS, INC. | | RL270B2 | 19176 | SERVO INSTRUMENT CORPORATION | | RL270B2 | 24017 | COGNITIVE RESOURCES INC DBA GAMEWELL CO THE | | SM-C-120067 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| ELECTRICAL RESISTANCE PER SECTION | 490.0 KILOHMS 1ST SECTION AND 29.218 KILOHMS 2ND SECTION AND 490.0 KILOHMS 3RD SECTION AND 490.0 KILOHMS 4TH SECTION | | ACTUATOR TYPE | DOUBLE ENDED SHAFT | | BODY DIAMETER | 2.000 INCHES NOMINAL | | BODY LENGTH | 1.750 INCHES NOMINAL | | BODY STYLE | CYLINDRICAL STUDS MOUNTED | | FIXED TAP QUANTITY PER SECTION | 1 ALL SECTIONS | | FUNCTION CHARACTERISTIC PER SECTION | ALL SECTIONS LINEAR | | FUNCTION CONFORMITY PER SECTION | ALL SECTIONS INDEPENDENT LINEARITY | | FUNCTION CONFORMITY TOLERANCE PER SECTION | -0.10 TO 0.10 1ST SECTION AND -0.15 TO 0.15 2ND SECTION AND -0.10 TO 0.10 3RD SECTION AND -0.10 TO 0.10 4TH SECTION | | MOUNTING FACILITY QUANTITY | 3 | | MOUNTING HOLE/STUD CIRCLE DIAMETER | 1.250 INCHES NOMINAL | | MOUNTING METHOD | THREADED HOLE | | POWER DISSIPATION RATING PER SECTION IN WATTS | 3.0 FREE AIR SINGLE SECTION | | RELIABILITY INDICATOR | NOT ESTABLISHED | | RESISTANCE TOLERANCE PER SECTION IN PERCENT | -5.0 TO 5.0 1ST SECTION AND -1.0 TO 1.0 2ND SECTION AND -1.0 TO 1.0 3RD SECTION AND -1.0 TO 1.0 4TH SECTION | | SCREW THREAD DIAMETER | 0.164 INCHES NOMINAL | | SCREW THREAD QUANTITY PER INCH | 32.0 | | SCREW THREAD SERIES DESIGNATOR | UNC | | SECTION QUANTITY | 4 | | SHAFT DIAMETER | 0.249 INCHES NOMINAL | | SHAFT LENGTH | 0.750 INCHES NOMINAL | | SHAFT STYLE | ROUND | | TAP LOCATION FROM CCW TERMINAL PER SECTION IN DEG OF EFFECTIVE ELECTRICAL ROTATION | 236.0 1ST SECTION AND 221.0 2ND SECTION AND 236.0 3RD SECTION AND 236.0 4TH SECTION | | TAP LOCATION TOLERANCE PER SECTION | -0.5 TO 0.5 DEG ANGULAR ROTATION ALL SECTIONS | | TEMP COEFFICIENT OF RESISTANCE PER SECTION IN PPM PER DEG CELSIUS | -20.0 TO 20.0 ALL SECTIONS | | TERMINAL LOCATION | RADIALLY POSITIONED OVER MORE THAN HALF THE CIRCUMFERENCE | | TERMINAL TYPE AND QUANTITY | 16 SOLDER STUD |
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