Double gang air variable capacitor with reduction gear. Dielectric, often used in radio tuning circuits. Variable capacity of an old tube radio. Close up

A variable air capacitor used in a radio tuning circuit is made... | Filo

Figure 25-35 shows a variable "air gap" capacitor for manual tu... | Filo

A variable air capacitor used in a radio tuning circuit is made of N semicircular plates, each of radius R and positioned a distance d from its neighbors, to which it is electrically connected. As shown in Figure P26.10, a second identical set of plates is enmeshed with the first set. Each plate in the second set is halfway between two plates of the first set. The second set can rotate as a unit. Determine the capacitance as a function of the angle of rotation θ where θ=0 corresponds to the maxi

D.I.Y. Variable Capacitor

A variable air capacitor used in a radio tuning circuit is made of N semicircular plates each of radius R and positioned a distance d from its neighbors, to which it is electrically connected. As shown in Figure P 26.10, a second identical set of plates is enmeshed with its plates halfway between those of the first set. The second set can rotate as a unit. Determine the capacitance as a function of the angle of rotation θ, where θ=0 corresponds to the maximum capacitance. CAN'T COPY THE FIGURE |

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