Where can I buy a trimmer capacitor?
Trimmer capacitors are almost always mounted directly on the PCB (Printed Circuit Board), so the user does not have access to them, and set during manufacturing using a small screwdriver.
What type of capacitor is a trimmer?
miniature variable capacitors
Trimmer capacitors are miniature variable capacitors. Trimmer capacitors are mounted directly on the printed circuit board with a provision to vary their value using a small screwdriver.
What is the purpose of trimmer capacitor?
Trimmer capacitors are variable components used to calibrate RF circuits during manufacturing or servicing. These components allow for variable tuning–think oscillator frequency values or rise and fall times.
How trimmer capacitors are made?
Trimmer capacitors, as depicted in figure 2, are small-size variable capacitors comprising of two metal plates normally divided by a slim piece of mica. The capacitance is altered by changing the space between the plates by a tiny screw that pushes the plates together.
What is polystyrene capacitor?
Polystyrene capacitors are capacitors that have a dielectric made up of polystyrene. They come only in low values, usually 10pF to 47nF. Normally, their tolerance is 5% to 10% but high precision polystyrene capacitors are also available with tolerances of 1% and 2%.
What is a ceramic disc capacitor?
A ceramic capacitor is a fixed-value capacitor where the ceramic material acts as the dielectric. It is constructed of two or more alternating layers of ceramic and a metal layer acting as the electrodes. The composition of the ceramic material defines the electrical behavior and therefore applications.
What is ganged capacitor?
A gang capacitor is a variable capacitor in which capacitance is varied by changing the Plate Area.
What is the difference between fixed capacitor and variable capacitor?
There are two major types of capacitors: fixed and variable. Fixed capacitors have set capacitances because the parallel sheets of metal are at a fixed distance apart, while variable capacitors have the ability to change based on manipulation of the parallel plates.