3269W-1-253LF

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Trimmer Potentiometers are small, variable resistors with three terminal connections, where two mobile terminals are usually fixed to a support, and a middle terminal is connected to a round knob which is used to adjust the resistance across the two terminals. The 3269W-1-253LF is a trimmer potentiometer that is designed for panel-mount trimming, and is used to dial in specific output voltages with digital accuracy from standard DC power supplies. The 3269W-1-253LF is a good choice for applications that require long life, high-accuracy, repeatability, and long operational life. Here’s an overview of the 3269W-1-253LF’s application field and working principle.

Application Field:

The 3269W-1-253LF can be used in a variety of applications, including servo loops, Audio/Video/Data signal conditioning, DC/DC converters, filters, gain controls, and Pre-amplifiers. It is suitable for trimming of precision DC power supplies and other circuit parameters..

Working Principle:

The 3269W-1-253LF is a three-terminal, single-pole trimmer potentiometer that works by adjusting the effective electrical resistance between the two terminals. The middle terminal is connected to an actuation shaft, which is then connected to a knob. When the knob is turned, the conductive shaft applies a specific amount of resistance across the two terminals, allowing for precise, repeatable voltage regulation. The shaft is spring-loaded, which prevents it from unintentional changes due to mechanical shock or wear.

The 3269W-1-253LF is constructed from epoxy-coated ceramic and has a nominal resistance of 123.4kΩ. It has an operating voltage of 5V and a power rating of 0.1W. It has a latch feature that allows for continuous adjustments with the knob, and a HexLock feature that locks the shaft to prevent accidental changes. It is also shock and vibration resistant, with a temperature stability of ±25 ppm/°C over the full -40°C to +85°C temperature range.

The 3269W-1-253LF is suitable for a wide variety of applications, thanks to its high accuracy and long life. Its small size also makes it ideal for use in both industrial and commercial applications. It is designed to be easy to mount on panels or other enclosures, and its features make it an excellent choice for precise, repeatable voltage regulation.

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