variable capacitor is a capacitor whose capacitance may be intentionally and repeatedly changed mechanically or electronically. Variable capacitors are...

A vacuum variable capacitor is a variable capacitor which uses a high vacuum as the dielectric instead of air or other insulating material. This allows...

In electrical engineering, a capacitor is a device that stores electrical energy by accumulating electric charges on two closely spaced surfaces that...

LC-circuits Vacuum variable capacitor Capacitors for special applications Power capacitor Safety capacitor Filter capacitor Light-emitting capacitor (LEC) Motor...

Capacitors are divided into two mechanical groups: Fixed-capacitance devices with a constant capacitance and variable capacitors. Variable capacitors...

electrolytic and tantalum capacitors Variable capacitor Ganged (co‑moving) variable capacitors (IEC‑style) Trimmer variable capacitor Optionally, the triangle in...

SW: Switch TFT: Thin-film transistor (display) TH: Thermistor VC: Variable capacitor VDR: Voltage-dependent resistor VFD: Vacuum fluorescent display VT:...

several advantages: The frequency may be adjusted using a single variable capacitor, one side of which can be earthed The output amplitude remains constant...

adjusted by the device's user. Trimmers can be variable resistors (potentiometers), variable capacitors, or trimmable inductors. They are common in precision...

convex on a real variable. Specifically, if a real-valued multivariable function is convex on one of its independent real variables, then the Legendre...

reverse-biased p–n junction. Varactors are used as voltage-controlled capacitors. They are commonly used in voltage-controlled oscillators, parametric...

R3 = a variable non-inductive resistance, C4 = a variable capacitor, R4 = a non-inductive resistance in parallel with the variable capacitor C4. Schering...

A variable-frequency drive (VFD, or adjustable-frequency drive, adjustable-speed drive, variable-speed drive, AC drive, micro drive, inverter drive, variable...

resistor, shunt capacitor) or LC (series choke, shunt capacitor) sections. Two common filter geometries are known as Pi (capacitor, choke, capacitor) and T (choke...

one of the two capacitors. If tuning by variable capacitor is needed, it should be done with a third capacitor connected in parallel to the inductor (or...

of 1pF/inch (0.4 pF/cm). "... twisted-pair wire makes an excellent variable capacitor, sometimes called a gimmick" Pease, Robert A. (1991). Troubleshooting...

Aluminium electrolytic capacitors are (usually) polarized electrolytic capacitors whose anode electrode (+) is made of a pure aluminium foil with an etched...

amount of correction can be adjusted; it behaves like a variable capacitor. Unlike with capacitors, the amount of reactive power furnished is proportional...

set the membrane-post distance; the membrane and the post formed a variable capacitor acting as a condenser microphone and providing amplitude modulation...

Capacitors have many uses in electronic and electrical systems. They are so ubiquitous that it is rare that an electrical product does not include at least...

higher frequency selectivity) than can be reliably achieved with discrete capacitors (C) and inductors (L), which suffer from parasitic resistance (R). Once...

A charge pump is a kind of DC-to-DC converter that uses capacitors for energetic charge storage to raise or lower voltage. Charge-pump circuits are capable...

A switched capacitor (SC) is an electronic circuit that implements a function by moving charges into and out of capacitors when electronic switches are...

amperes). Parasitic capacitance: The nonconducting diode behaves like a capacitor, which can distort and corrupt high-speed signals. Lower capacitance is...

output capacitor value ( C OUT {\textstyle C_{\text{OUT}}} ), the equivalent series resistance (ESR) of the output capacitor, the bypass capacitor ( C BYP...

divider. If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat. The measuring instrument called a potentiometer is...

circuits for variable-frequency drives, for coupling signals between amplifier stages, and storing energy as in a flashlamp. Electrolytic capacitors are polarized...

frequency range can be covered by a given variable capacitor in an RC oscillator. For example, a variable capacitor that could be varied over a 9:1 capacitance...

V_{p}e^{j\omega t}} and thus, as previously, Z capacitor = v C ( t ) i C ( t ) = 1 j ω C . {\displaystyle Z_{\text{capacitor}}={\frac {v_{\text{C}}{\mathord...

on or off. The isolated gate-electrode of the MOSFET forms a capacitor (gate capacitor), which must be charged or discharged each time the MOSFET is...