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The inside of a cavity from a Russian military radar transmitter, with the cover removed. The cavity serves as the resonant circuit of an oscillator using the triode vacuum tube inside. Parts: (1) A setscrew trimmer capacitor used to adjust the frequency (2) The top of the GS13-1 (Russian: ГС-13-1 [1]) triode which generates the microwaves
A motor capacitor [1] [2] is an electrical capacitor that alters the current to one or more windings of a single-phase alternating-current induction motor to create a rotating magnetic field. [ citation needed ] There are two common types of motor capacitors, start capacitor and run capacitor (including a dual run capacitor ).
The up- and down-state capacitance are in the order of 50 fF and 1.2 pF, which are functional values for millimeter-wave circuit design. Switches typically have a capacitance ratio of 30 or higher, while switched capacitors and varactors have a capacitance ratio of about 1.2 to 10. The loaded Q factor is between 20 and 50 in the X-, Ku- and Ka ...
A reversing valve removed from an HVAC heat pump for replacement. A reversing valve is a type of valve and is a component in a heat pump, that changes the direction of refrigerant flow. By reversing the flow of refrigerant, the heat pump refrigeration cycle is changed from cooling to heating or vice versa. This allows a residence or facility to ...
Characteristics of the different oxide layers in aluminium, tantalum and niobium electrolytic capacitors [1] [2] Anode-material Dielectric Oxide structure Relative permittivity Breakdown voltage (V/μm) Electric layer thickness (nm/V) aluminium: Aluminium oxide Al 2 O 3: amorphous: 9.6: 710: 1.4 crystalline: 11.6…14.2 [3] 800...1000 [4] 1.25 ...
Cross-section of microstrip geometry. Conductor A is separated from ground plane D by dielectric substrate C.Upper dielectric B is typically air.. Microstrip is a type of electrical transmission line which can be fabricated with any technology where a conductor is separated from a ground plane by a dielectric layer known as substrate.
These motors are sometimes called DC motors, sometimes EC motors and occasionally DC/EC motors. DC stands for direct current and EC stands for electronically commutated.. DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required.
It consists of a power capacitor connected in series with a bidirectional thyristor valve and, usually, a current limiting reactor . The thyristor switched capacitor is an important component of a Static VAR Compensator (SVC), [ 1 ] [ 2 ] where it is often used in conjunction with a thyristor controlled reactor (TCR).