Voltage Variable Capacitor. Capacitors that can be intentionally and repeatedly changed both mechanically and electronically. They are commonly used in various rf circuits applications include tuners crystal oscillators and filters.
They can be considered for applications such as frequency adjustment. The probe plot in figure 6 shows capacitance versus controlling voltage for a voltage variable capacitor similar to 1n4155. Cvdb 320 6n538 jennings 10 320pf 5kv variable vacuum capacitor.
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They are used to set frequencies in the circuit. From the d device capacitance equations. The voltage rating of an air filled capacitor at atmospheric pressure 760torr or 1 01bar is about thirteen times lower than that of an otherwise identical vacuum capacitor at 10 torr. Capacitors that can be intentionally and repeatedly changed both mechanically and electronically.
