Search results
Results from the WOW.Com Content Network
The "Wave Radio II" was introduced in 2005 and was based on the Wave Music System without the CD player. It used a dual tapered waveguide and revised speakers. The "Wave Radio III", introduced in 2007, was identical in appearance to the Wave Radio II and added Radio Data System (RDS) and a large snooze button on top of the unit.
It has two radio frequency amplifier stages, one grid-leak detector/amplifier and three class ‘A’ audio amplifier stages. There are 3 tuned circuits T1-C1, T2-C2, and T3-C3. The second and third tuning capacitors, C2 and C3, are ganged together (indicated by line linking them) and controlled by a single knob, to simplify tuning. Generally ...
The impedance of the capacitor is small at the carrier frequency and high at the modulating frequencies. [17] A resistor (the grid leak) is connected either in parallel with the capacitor or from the grid to the cathode. The resistor permits dc charge to "leak" from the capacitor [18] and is utilized in setting up the grid bias. [19]
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.
Bose store in Century City Bose store at the Hong Kong International Airport. The company was founded in Massachusetts in 1964 by Amar Bose with angel investor funding, including Amar's thesis advisor and professor, Y. W. Lee. [9] Bose's interest in speaker systems had begun in 1956 when he purchased an audio system and was disappointed with its performance. [10]
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.
In microwave and radio-frequency engineering, a stub or resonant stub is a length of transmission line or waveguide that is connected at one end only. The free end of the stub is either left open-circuit, or short-circuited (as is always the case for waveguides).
The General Radio / IET labs 1417 is one such example. Capacitor multipliers make low-frequency filters and long-duration timing circuits possible that would be impractical with actual capacitors. Another application is in DC power supplies where very low ripple voltage (under load) is of paramount importance, such as in class-A amplifiers.