89PR20KLFTB Allicdata Electronics
Allicdata Part #:

89PR20KLFTB-ND

Manufacturer Part#:

89PR20KLFTB

Price: $ 0.58
Product Category:

Potentiometers, Variable Resistors

Manufacturer: TT Electronics/BI
Short Description: TRIMMER
More Detail: 20 kOhms 0.75W, 3/4W PC Pins Through Hole Trimmer ...
DataSheet: 89PR20KLFTB datasheet89PR20KLFTB Datasheet/PDF
Quantity: 1000
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
600 +: $ 0.52920
Stock 1000Can Ship Immediately
$ 0.58
Specifications
Series: 89
Part Status: Active
Lead Free Status / RoHS Status: --
Resistance: 20 kOhms
Power (Watts): 0.75W, 3/4W
Tolerance: ±10%
Temperature Coefficient: ±100ppm/°C
Number of Turns: 20
Adjustment Type: Side Adjustment
Resistive Material: Cermet
Mounting Type: Through Hole
Termination Style: PC Pins
Size / Dimension: Rectangular - 0.810" x 0.190" Face x 0.250" H (20.57mm x 4.83mm x 6.35mm)
Description

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Trimmer Potentiometers

Trimmer potentiometers (also called trim pots or trimmers) are three-terminal devices designed for adjustment of electronic circuits. They are also known by the acronym of 89PR20KLFTB, representing their main features: 89mm diameter, panel mount, 20K Ohms resistance, linear taper, flat shaft and bush mounting.Trimmer potentiometers are mainly used in audio equipment, amplifiers etc. They are used to fine-tune the electrical parameters of a circuit, for example, the gain or frequency of an amplifier. They are also used to establish a stable reference voltage, to set the gain of a transimpedance amplifier, and to establish other similar functions.Trimmer potentiometers consist essentially of a resistive element and a wiper. The resistive element is normally made of carbon or cermet and the wiper is made of metal. The wiper is mechanically connected to the rotary knob which is used to adjust the resistance value. The pot\'s resistance is determined by the position of the wiper along the resistive element.The working principle of a trimmer potentiometer is relatively simple. The resistive element is connected between two terminals, one of which is called the "Reference" and the other is called the "Output". The wiper is then connected to the knob which is used to adjust the resistance of the element, in order to control the current flow between the Reference and the Output. A third terminal, usually labeled "Wiper", is connected to the wiper itself.Trimmer potentiometers are used in a wide variety of applications, including audio applications, electronic test equipment, power supplies, and even robots. In audio applications, they are typically used to precisely adjust the gain of an amplifier, or to set the frequency response of an equalizer. In electronic test equipment, they are used to fine-tune the parameters of an oscillator. In power supplies, they are used to adjust the output voltage of a power supply. Finally, in robots, they are used to precisely set the position of the robot\'s servo motors.In conclusion, trimmer potentiometers (89PR20KLFTB) are three-terminal devices which are used to adjust the electrical parameters of a circuit, such as resistance, gain, frequency, etc. They consist of a resistive element and a wiper which are mechanically connected to a rotary knob, used to adjust the resistance of the element. They are widely used in a variety of applications, including audio, test equipment, power supplies, and robots.

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