3318F-1-502 Potentiometers, Variable Resistors

Series:	Trimpot® 3318 - Open Frame
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Resistance:	5 kOhms
Power (Watts):	0.1W, 1/10W
Tolerance:	±30%
Temperature Coefficient:	±1000ppm/°C
Number of Turns:	1
Adjustment Type:	Top Adjustment
Resistive Material:	Carbon
Mounting Type:	Through Hole
Termination Style:	PC Pins
Size / Dimension:	Square - 0.264" x 0.252" Face x 0.250" H (6.70mm x 6.40mm x 6.35mm)

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Introduction

Trimmer potentiometers are adjustable resistors whose resistance is adjustable via a knob shaft on the component or a detachable handle. The 3318F-1-502 is a trimmer potentiometer, and it can be used to fine-tune the resistive adjustment needed for some electronic circuits. In this article, we will look at the application fields and working principles of the 3318F-1-502.

Application Field

The 3318F-1-502 is a mechanically adjustable potentiometer. It is commonly used in medium-power electronic circuits to adjust voltage, current, frequency, and signal waveforms. It is ideal for use in voltage and current regulation, dimmers, volume and tone controls, and frequency syndication. In addition, it can also be used in medical equipment, precision audio amplifiers, communication circuits, and uninterruptible power supply (UPS) systems.

Working Principle

The 3318F-1-502 is a three-terminal device. It consists of a resistance element that is connected to two end-terminal contacts, or wiper contacts, and a third center-terminal contact. When the potentiometer is rotated, the wiper contact slides across the resistor element, changing the resistance between the end-terminal contacts. The resistance between the wiper contact and the center-terminal contact is fixed and is the nominal resistance of the device.The 3318F-1-502 consists of a resistive element that is connected between two terminals at one end and a variable wiper at the other end. The resistance between the two end terminals is usually referred to as the total resistance, or nominal resistance, and is usually specified in ohms. The resistance between the wiper and one of the end-terminals is referred to as the tapped resistance and is typically specified in ohms/turn. The relationship between the total resistance and the tapped resistance is known as the tap ratio.The 3318F-1-502 has a wide range of adjustments from 10 ohms to 2 megohms and is available in both single-turn and multi-turn variations. It is available in both taper and linear versions, depending on the application. The linear version features a linear relationship between the resistive component\'s value and the knob shaft position, while the taper version features a logarithmic relationship. Additionally, the 3318F-1-502 is also available in sealed, waterproof, and radiation-resistant versions.

Conclusion

The 3318F-1-502 is a trimmer potentiometer that is commonly used in medium-power electronic circuits to adjust voltage, current, frequency, and signal waveforms. It is available in both single-turn and multi-turn versions, and it can be equipped with either a linear or logarithmic tap ratio. It is also available in waterproof, sealed, and radiation-resistant versions, making it suitable for use in a variety of applications.

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