Trimmer Capacitor

Application ID: 67341

A trimmer capacitor has a variable capacitance. One way of obtaining this is to use parallel facing electrodes with a variable overlap area. In this example, the capacitance can be changed by turning one electrode using a screwdriver. Typically a linear angular response is desired.

Trimmer capacitors are often used in high frequency applications, for example for frequency tuning of RF and microwave filters.

This model example illustrates applications of this type that would nominally be built using the following products: