Trimmer Capacitor

trimmer capacitor

[′tim·ər kə‚pas·əd·ər]
(electricity)
A relatively small variable capacitor used in parallel with a larger variable or fixed capacitor to permit exact adjustment of the capacitance of the parallel combination.

Trimmer Capacitor

 

in radio engineering, a capacitor with a low variable capacitance that can be set at a certain value. Trimmer capacitors are used mainly to effect the alignment of resonant oscillatory circuits. As a rule, the capacitance of a trimmer capacitor is set during the fabrication of a radio-electronic device. After such setting, the movable parts of the trimmer capacitor are locked in place and remain in their fixed positions while the device is operating. A trimmer capacitor is generally a simplified parallel-plate variable capacitor with one stator plate and one rotor plate; less frequently, it may be, for example, a system consisting of two or more concentric ceramic cylinders or metal plates with an air gap or a system consisting of a rod and a metal-plated ceramic tube. The capacitance of a trimmer capacitor and the range in which the capacitance may be varied usually amount to several picofarads or several tens of picofarads.

References in periodicals archive ?
Tusonix's smallest Miniature All-Ceramic Surface Mount Trimmer Capacitor - the McQ 512 Series - is offered in an incredibly compact size for those applications that demand high Q and space-saving solutions.
Suitable for any application requiring a nonmagnetic trimmer capacitor, the series offers four capacitance ranges from 0.
Tenders are invited for Antenna Trimmer Capacitor For Sma
Each trimmer capacitor is half the size of conventional air-dielectric types and has extremely linear tuning without reversals.
Suited for telecom and microwave projects, the SGC3S Series ceramic trimmer capacitors measure 0.
Also, it does not require the peripheral components commonly found with piezoelectric devices such as lead wires, booster coils, or trimmer capacitors.
A new series of Gigahertz trimmer capacitors that are reduced in size while improving effective series resistance and self-resonant frequency performance was on display by Temex Components.
Tenders are invited for Non Magnetic Trimmer Capacitors
Models in the GKRP Series of miniature, low-profile surface-mount trimmer capacitors measure 3.
The model GKP6R066 SURFTRIM[R] surface-mount trimmer capacitors features an extremely thin profile and capacitance range of 2.