Ads
related to: 200pf variable tuning capacitor kit- Motors
New and Used Vehicles and Parts.
Find Items from Every Automaker.
- Home & Garden
From Generators to Rugs to Bedding.
You’ll Find Everything You Need
- Motors
Search results
Results from the WOW.Com Content Network
Founded in 1923 to provide tuning capacitors for the growing home construction market, by the Fillmore family in Lewisham, England, (there never was a pair of people involved who were Jackson brothers!) the firm went on to manufacture a huge variety of the, mostly air-spaced, two or three gang, variable capacitors, that were at the heart of all ...
Differential variable capacitors also have two independent stators, but unlike in the butterfly capacitor where capacities on both sides increase equally as the rotor is turned, in a differential variable capacitor one section's capacity will increase while the other section's decreases, keeping the sum of the two stator capacitances constant.
This can be accomplished by placing a DC blocking capacitor with a capacitance about 100 times greater than the maximum capacitance of the varicap diode in series with it and by applying DC from a high impedance source to the node between the varicap cathode and the blocking capacitor as shown in the upper left circuit in the accompanying diagram.
Variable capacitors may have their capacitance changed by mechanical motion. There are two main types: Tuning capacitor – variable capacitor for intentionally and repeatedly tuning an oscillator circuit in a radio or another tuned circuit; Trimmer capacitor – small variable capacitor usually for one-time oscillator circuit internal adjustment
Hammarlund Comet Pro. The first Hammarlund plant was a loft operation engaged in radio component manufacturing on Fulton Street in Lower Manhattan, New York City.Their variable capacitor designs quickly became industry standards, and the component's schematic symbol was adopted as the company's logo.
A variable capacitor (or sometimes a variable coupling coil called a variometer) was used, with a knob on the front panel to tune the receiver. The RF stages usually had identical circuits to simplify design. Each RF stage had to be tuned to the same frequency, so the capacitors had to be tuned in tandem when bringing in a new station.
A gimmick capacitor is a capacitor made by twisting two pieces of insulated wire together. The capacitance may be varied by loosening or tightening the winding. The capacitance may be varied by loosening or tightening the winding.
A: preset resistor, B: preset resistor (alternate), C: preset potentiometer, D preset potentiometer (alternate), E: preset inductor, F: preset capacitor. In circuit diagrams, the symbol for a variable component is the symbol for a fixed component with a diagonal line through it terminating in an arrow head.
Ads
related to: 200pf variable tuning capacitor kit