5905-01-498-0505, RESISTOR,VARIABLE,NONWIRE WOUND,

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:

SECTION QUANTITY	1
ELECTRICAL RESISTANCE PER SECTION	10000.000 OHMS SINGLE SECTION
RESISTANCE TOLERANCE PER SECTION IN PERCENT	-10.000 TO 10.000 SINGLE SECTION
TERMINAL LOCATION	RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE
POWER DISSIPATION RATING PER SECTION IN WATTS	1.0 FREE AIR SINGLE SECTION
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
DEVICE DESIGN TYPE	NONTURN AT 9 OCLOCK
BODY STYLE	CYLINDRICAL BUSHING MOUNTED
BODY DIAMETER	0.906 INCHES NOMINAL
BODY LENGTH	0.453 INCHES NOMINAL
MOUNTING BUSHING LENGTH	0.375 INCHES NOMINAL
ACTUATOR TYPE	SINGLE SHAFT
SHAFT STYLE	ROUND
SHAFT DIAMETER	0.250 INCHES NOMINAL
SHAFT LENGTH	0.625 INCHES NOMINAL
NONTURN DEVICE RADIUS	0.438 INCHES NOMINAL
MOUNTING METHOD	TERMINAL
TERMINAL TYPE AND QUANTITY	3 PIN
CENTER TO CENTER DISTANCE BETWEEN TERMINALS	0.876 INCHES NOMINAL
CENTER TO CENTER DISTANCE BETWEEN CENTER TERMINAL AND OUTSIDE TERMINAL	0.438 INCHES NOMINAL
TERMINAL LENGTH	0.250 INCHES NOMINAL
RELIABILITY INDICATOR	NOT ESTABLISHED
SPEC/STD CONTROLLING DATA
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MIL-PRF-94/4
MANUFACTURERS CODE	81349
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	RV2NAYFD103A

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