3296W-1-471

Series:	Trimpot® 3296 - Sealed
Packaging:	Tube
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	470 Ohms
Power (Watts):	0.5W, 1/2W
Tolerance:	±10%
Temperature Coefficient:	±100ppm/°C
Number of Turns:	25
Adjustment Type:	Top Adjustment
Resistive Material:	Cermet
Mounting Type:	Through Hole
Termination Style:	PC Pins
Size / Dimension:	Rectangular - 0.375" x 0.190" Face x 0.395" H (9.53mm x 4.83mm x 10.03mm)

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3296W-1-471 Trimmer Potentiometers

Trimmer potentiometers are devices, typically used in electronics, that provide adjustable resistance or voltage division components within a circuit. They offer a user-friendly way to adjust, trim, or tune the amplitude or DC offset of a signal on the circuit board. The 3296W-1-471 trimmer potentiometer is anHigh-Reliability, high-current, high-accuracy trimmer potentiometer. Specifically, this device boasts a low temperature coefficient, low-noise, and high-stability.

Application Field

The application field of 3296W-1-471 trimmer potentiometers is wide. One of the most important application fields for these trimmers is due to their ideal features for impedance matching within radio-frequency circuits. That is, they are commonly used in RF attenuators, RF gain control circuits, and other impedance matching circuits. Other application fields include:

• Servo systems.
• Adjusting of magnetic systems.
• Voltage dividers.
• Servo motor control.
• Motor drives.

Working Principle

The operation of 3296W-1-471 trimmer potentiometers is based off of the principle of resistive voltage division. Specifically, the internal components of the device consists of a resistance element, typically a conductive track on a ceramic substrate, between the two wiring pins. The adjustment, or the ‘trimming’ of the linear voltage division is achieved by rotating a knob attached to a resistive element within the package.The resistance within the 3296W-1-471 trimmer potentiometer, in relation to the output voltage, is determined by the following equation:Where V_in is the input voltage, R₁ is the internal resistance of the trimmer device, and R₂ is a variable resistor controlled by the rotary knob within the device. To extend the range of possible output voltages across the device, a minimum voltage input of 10 volts is required.The 3296W-1-471 trimmer potentiometer also offers enhanced features such as pull-down control. This means a capacitor within the device can be used to help control the rate of change of the output voltage. This allows an input voltage to be ‘pulled’, over the resistance element, at a controlled rate.

Conclusion

The 3296W-1-471 trimmer potentiometers are ideal high-reliability, high-current, and high-accuracy devices for a wide range of application fields. The device offers adjustable resistance between two wiring pins, configured as a linear voltage divider through a resistive element and a ‘trimmable’ element accessible from the outside. The device also offers pull-down control to help control the rate of change of the output voltage.

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