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2-109

Model 7480 Series

MODEL 7480 SERIES

7/8” Diameter

5–Turn

Wirewound

Precision Potentiometer

ELECTRICAL

Resistance Range, Ohms

100 to 50K

Standard Resistance Tolerance

±5%

Minimum Practical Resistance Tolerance

±1%

Independent Linearity

±0.25%

Minimum Practical Independent Linearity

±0.25%, < 500 Ohms

±0.20%,

≥ 500 Ohms

Power Rating, Watts

1.5 at 70°C derating to 0 at 125°C

Dielectric Strength

1,000V rms

Insulation Resistance, Minimum

1,000 Megohms

Noise, Maximum

100 Ohms

Actual Electrical Travel

1080° + 10° – 0°, > 100 Ohms

1080° + 10° – 5°,

≤ 100 Ohms

Tap Tolerance

±3°

End Voltage, Maximum

0.25% of input voltage

MODEL STYLES

7481

1/8” Shaft, 1/4” Bushing

7483

1/8” Shaft, Servo

7486

1/4” Shaft, 3/8” Bushing

1/4” Shaft, 3/8” Bushing

Specifications subject to change without notice.

ENVIRONMENTAL (MIL-R-12934)

Operating Temperature Range

Static: –55°C to +125°C

Dynamic: –40°C to +125°C

Thermal Shock

5 cycles, –55°C to +125°C (5%

∆R)

Shock, 6ms Sawtooth

100G’s (0.1ms discontinuity max.)

Vibration

15G’s, 10 to 2,000 Hz (5%

∆R, 0.1ms discontinuity max.)

Moisture Resistance

Five 24 hour cycles (3%

∆R)

High Temperature Exposure

1,000 hours at 125°C (5%

∆R)

Rotational Load Life

500K shaft rev. + 900 hrs. at rated wattage at 70°C (5%

∆R)

Rotational Life Model 7488 (1 pound Side Load)

500K shaft rev. + 900 hrs. at rated wattage at 70°C (5%

∆R)