Part Details | PRECISION WIRE WOUND VARIABLE RESISTOR
5905-00-250-7986 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.
Alternate Parts: 68A32C3161, 68A32C316-1, 5905-00-250-7986, 00-250-7986, 5905002507986, 002507986
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 59 | NOV 19, 1969 | 00-250-7986 | 37408 ( RESISTOR, VARIABLE, WIRE WOUND, PRECISION ) |
REFERENCE DRAWINGS & PICTURES
CYLINDRICAL SERVO MOUNTED
ROUND
Cross Reference | NSN 5905-00-250-7986
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 68A32C316-1 | 30003 | NAVAL AIR SYSTEMS COMMAND MANAGEDORIGINAL DESIGN ACTIVITY NOT |
Technical Data | NSN 5905-00-250-7986
| Characteristic | Specifications |
|---|---|
| SECTION QUANTITY | 1 |
| ELECTRICAL RESISTANCE PER SECTION | 50.0 KILOHMS SINGLE SECTION |
| RESISTANCE TOLERANCE PER SECTION IN PERCENT | -5.0 TO +5.0 SINGLE SECTION |
| FUNCTION CONFORMITY PER SECTION | SINGLE SECTION INDEPENDENT LINEARITY |
| FUNCTION CHARACTERISTIC PER SECTION | SINGLE SECTION LINEAR |
| FUNCTION CONFORMITY TOLERANCE PER SECTION | -0.50 TO +0.50 SINGLE SECTION |
| SHAFT RUNOUT | 0.002 INCHES |
| LATERAL RUNOUT | 0.006 INCHES |
| PILOT DIAMETER RUNOUT | 0.002 INCHES |
| SHAFT RADIAL PLAY | 0.003 INCHES |
| SHAFT BEARING TYPE | BALL |
| SHAFT END PLAY | 0.005 INCHES |
| MAXIMUM STARTING TORQUE | 1.30 INCH-OUNCES |
| MAXIMUM RUNNING TORQUE | 1.30 INCH-OUNCES |
| TEMP COEFFICIENT OF RESISTANCE WIRE PER SECTION IN PPM PER DEG CELSIUS | -20.0 TO +20.0 SINGLE SECTION |
| POWER DISSIPATION RATING PER SECTION IN WATTS | 2.0 FREE AIR SINGLE SECTION |
| AMBIENT TEMP IN DEG CELSIUS PER SECTION AT FULL RATED POWER | 40.0 SINGLE SECTION |
| AMBIENT TEMP IN DEG CELSIUS PER SECTION AT ZERO PERCENT RATED POWER | 85.0 SINGLE SECTION |
| FIXED TAP QUANTITY PER SECTION | 3 SINGLE SECTION |
| TAP LOCATION FROM CCW TERMINAL PER SECTION IN DEG OF EFFECTIVE ELECTRICAL ROTATION | 90.0 SINGLE SECTION AND 180.0 SINGLE SECTION AND 270.0 SINGLE SECTION |
| TAP LOCATION TOLERANCE PER SECTION | -5.0 TO +5.0 DEG ANGULAR ROTATION SINGLE SECTION |
| BODY STYLE | CYLINDRICAL SERVO MOUNTED |
| PILOT DIAMETER | 1.5620 INCHES MAXIMUM |
| PILOT LENGTH | 0.0620 INCHES NOMINAL |
| UNDERCUT DIAMETER | 1.570 INCHES MAXIMUM |
| UNDERCUT WIDTH | 0.0730 INCHES MINIMUM |
| BODY DIAMETER | 1.750 INCHES NOMINAL |
| BODY LENGTH | 0.665 INCHES NOMINAL |
| MOUNTING LIP DIAMETER | 1.7500 INCHES NOMINAL |
| MOUNTING LIP DEPTH | 0.0930 INCHES NOMINAL |
| ACTUATOR TYPE | DOUBLE ENDED SHAFT |
| SHAFT STYLE | ROUND |
| SHAFT DIAMETER | 0.2497 INCHES MAXIMUM |
| SHAFT LENGTH | 0.625 INCHES NOMINAL |
| ROTARY ACTUATOR TRAVEL IN ANGULAR DEG | 360.0 NOMINAL |
| ACTUATOR TRAVEL CONTROL FEATURE | CONTINUOUS MOTION |
| EFFECTIVE ELECTRICAL ROTATION IN DEG ANGULAR ROTATION | 350.0 NOMINAL |
| MOUNTING METHOD | CLAMP RING |
| TERMINAL TYPE AND QUANTITY | 5 TURRET AND 1 WIRE LOOP |
| TERMINAL LOCATION | RADIALLY POSITIONED OVER MORE THAN HALF THE CIRCUMFERENCE |
| RELIABILITY INDICATOR | NOT ESTABLISHED |
| SPECIAL FEATURES | REAR SHAFT; 0.5 IN. LG; 0.2497 IN. DIA |
| OVERALL LENGTH | 1.790 INCHES NOMINAL |
| OVERALL DIAMETER | 2.250 INCHES MAXIMUM |
| CUBIC MEASURE | 1.600 CUBIC INCHES |
| PRECIOUS MATERIAL | GOLD |
| PRECIOUS MATERIAL AND LOCATION | TERMINAL SURFACES GOLD |