3009P-1-201LF

Series:	Trimpot® 3009 - Sealed
Packaging:	Tube
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	200 Ohms
Power (Watts):	0.75W, 3/4W
Tolerance:	±10%
Temperature Coefficient:	±100ppm/°C
Number of Turns:	15
Adjustment Type:	Side Adjustment
Resistive Material:	Cermet
Mounting Type:	Through Hole
Termination Style:	PC Pins
Size / Dimension:	Rectangular- 0.354" x 0.190" Face x 0.750" L (8.98mm x 4.83mm x 19.05mm)

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Trimmer Potentiometers

Trimmer potentiometers, as the name implies, are a class of adjustable potentiometers used for fine-tuning electronic systems. Generally speaking, they are a type of resistor packaged as a three-legged device, with two terminals (which the system is connected to) and a single control terminal that is adjustable.The 3009P-1-201LF is a trimmer potentiometer specifically suited for use in low-power audio applications. Its low-profile, space saving design allows for use in critically confined environments, such as those found in musical instruments. It has single-turn absolute precise linearity between 0 and 100Ω, making this pot ideal for adjusting bass and treble frequencies.The working principle of the 3009P-1-201LF is straightforward. It is essentially two resistors connected in series. One resistor is fixed and the other is adjustable, via the movement of the central terminal. As the central terminal is moved, the resistance within the closed path changes (which is referred to as the variable resistor). This change in resistance affects the current flow and voltage across the terminals depending on which direction the terminal is adjusted. Due to its low-profile design and useful resistance range, the 3009P-1-201LF has a wide range of potential applications which include audio effects units, low power amplifiers, headphones, and guitar amplifiers. It can also be used in measuring instruments, precision control circuits, and motor speed regulation. The 3009P-1-201LF is also versatile in the sense that it can be used as a voltage divider to control a lower voltage level, such as for applications like logic level shifting, or a signal attenuator. This is achieved by connecting the trimmer between two resistors, or two resistors and a capacitor, to create an adjustable low-pass filter. This provides a useful tool for fine-tuning circuits without the need for other components such as variable resistors. The trimmer potentiometer also provides a means of setting a voltage reference, as it can be used to adjust the bias voltage of a transistor amplifier, or to set the optimum quiescent current for a class-A amplifier. This is achieved by connecting the trimmer between the output of the voltage reference and the input of the amplifier. Once the voltage is set, the trimmer may remain untouched throughout its lifetime.To summarize, the 3009P-1-201LF trimmer potentiometer is a small, space-saving, low-profile device ideal for use in low-power audio applications and where precise voltage level adjustments are necessary. Its low resistance range makes it particularly useful for effecting adjustments to bass and treble frequencies, while its versatility makes it a logical choice for a wide range of precision measuring and control applications.

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