|
|
|
National Stock Number:
5905-01-498-0505
Federal Supply Class:
5905
National Item Identification Number:
014980505
Description:
RESISTOR,VARIABLE,NONWIRE WOUND,
Detail:
A RESISTOR IN WHICH A SLIDING OR ROLLING CONTACT MOVES OVER AN EXPOSED AREA OF THE RESISTIVE ELEMENT. UNIFORM CONTACT PRESSURE ON THE RESISTANCE ELEMENT IS MAINTAINED BY POSITIVE PRESSURE TO PERMIT SMOOTH ELECTRICAL AND MECHANICAL CONTROL OF THE RESISTOR OVER THE ENTIRE RESISTANCE RANGE. THE RESISTIVE ELEMENT IS CONSTRUCTED OF A COMBINATION OF TWO MATERIALS USUALLY CONSISTING OF A WIREWOUND ELEMENT WITH A COATING OF CONDUCTIVE PLASTIC APPLIED OVER THE RESISTANCE WIRE WHERE THE SLIDER MAKES CONTACT. MAY BE CONSTRUCTED OF A SINGLE OR MULTITURNS OF WIRE SUPPORTED ON AN INSULATING STRUCTURE ON WHICH THE WIPER CONTACTS THE COATED WIRE CONTINUOUSLY IN THE DIRECTION OF WIPER TRAVEL. THE OPPOSITION TO THE FLOW OF CURRENT IS AN INHERENT PROPERTY OF THE WIRE USED AND IS MANIFESTED IN THE HEAT DISSIPATED IN THE RESISTOR ITSELF. 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 OTHER RESISTOR (1), VARIABLE, (AS MODIFIED).
|
Manufacturer Information:
| MIL-PRF-94/4 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | RV2NAYFD103A | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
|
Techincal Specification:
| ACTUATOR TYPE | SINGLE SHAFT | | AMBIENT TEMP IN DEG CELSIUS PER SECTION AT FULL RATED POWER | 70.0 SINGLE SECTION | | AMBIENT TEMP IN DEG CELSIUS PER SECTION AT ZERO PERCENT RATED POWER | 120.0 SINGLE SECTION | | BODY DIAMETER | 0.906 INCHES NOMINAL | | BODY LENGTH | 0.453 INCHES NOMINAL | | BODY STYLE | CYLINDRICAL BUSHING MOUNTED | | CENTER TO CENTER DISTANCE BETWEEN CENTER TERMINAL AND OUTSIDE TERMINAL | 0.438 INCHES NOMINAL | | CENTER TO CENTER DISTANCE BETWEEN TERMINALS | 0.876 INCHES NOMINAL | | DEVICE DESIGN TYPE | NONTURN AT 9 OCLOCK | | ELECTRICAL RESISTANCE PER SECTION | 10000.000 OHMS SINGLE SECTION | | MOUNTING BUSHING LENGTH | 0.375 INCHES NOMINAL | | MOUNTING METHOD | TERMINAL | | NONTURN DEVICE RADIUS | 0.438 INCHES NOMINAL | | POWER DISSIPATION RATING PER SECTION IN WATTS | 1.0 FREE AIR SINGLE SECTION | | RELIABILITY INDICATOR | NOT ESTABLISHED | | RESISTANCE TOLERANCE PER SECTION IN PERCENT | -10.000 TO 10.000 SINGLE SECTION | | SECTION QUANTITY | 1 | | SHAFT LENGTH | 0.625 INCHES NOMINAL | | SHAFT DIAMETER | 0.250 INCHES NOMINAL | | SHAFT STYLE | ROUND | | TERMINAL LENGTH | 0.250 INCHES NOMINAL | | TERMINAL LOCATION | RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE | | TERMINAL TYPE AND QUANTITY | 3 PIN |
|
|