78LR500LF

Series:	78
Part Status:	Active
Lead Free Status / RoHS Status:	--
Resistance:	500 Ohms
Power (Watts):	1W
Tolerance:	±10%
Temperature Coefficient:	±100ppm/°C
Number of Turns:	22
Adjustment Type:	Side Adjustment
Resistive Material:	Cermet
Mounting Type:	Panel Mount, Wire Leads
Termination Style:	Wire Leads
Size / Dimension:	--

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Introduction to Trimmer Potentiometers

Trimmer potentiometers, also known as trimmer resistors, are miniature adjustable resistors, mainly used in electronic circuits to fine-tune the performance of the device by providing a fixed resistance value. Trimmer potentiometers have a compact design and are ideal for applications where frequent adjustment is necessary.The most commonly used trimmer potentiometers are the 78LR500LF, which is a single turn potentiometer with high reliability and long life. It is widely used in audio and video equipment, where it is used to adjust the volume and balance of the system.

78LR500LF Application Field

The 78LR500LF is a versatile trimmer potentiometer that can be used in any electronic application where an adjustable resistor is required. Due to its small size and low-profile design, the 78LR500LF is extremely popular for many audio and video applications including tone and volume level adjustments, pre-amp level adjustments, video camera focus and zoom adjustments, and other types of tuning applications.In addition to audio and video applications, the 78LR500LF can also be used in various automotive applications. It is commonly used to adjust the idle speed on vehicles equipped with manual transmission, as well as to adjust engine speed and resolution on vehicles equipped with automatic transmission. This trimmer potentiometer is also used to adjust the air/fuel mixture on carburetor engines, which helps keep the engine running smoothly and efficiently.

78LR500LF Working Principle

The 78LR500LF is a single turn potentiometer, which means it has a single control point, typically located on the top of the device. By turning the control knob, the internal resistance of the potentiometer can be adjusted, up or down, to the desired level.When the control knob is rotated, it causes the contact arm inside the potentiometer to slide, adjusting the resistance. The resistance can be adjusted up or down, depending upon how the control knob is rotated. This adjustment process requires only a small amount of force and no voltage is required to make the adjustment.The 78LR500LF is designed to be highly reliable and offers great performance stability, even in harsh conditions. It is also highly resistant to environmental factors such as dust, shock and vibration. This makes the 78LR500LF an ideal solution for applications that require reliable and precise operation.

Conclusion

The 78LR500LF is an ideal trimmer potentiometer for applications requiring reliable and precise adjustment of resistance values. It is highly reliable, offers great performance stability, and can handle harsh conditions. Its small size and low-profile design also make it popular for audio and video applications, as well as for various automotive applications.

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