tunable filter
31Electronic amplifier — A practical amplifier circuit An electronic amplifier is a device for increasing the power of a signal. It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. In… …
32Passband — In brief, the Passband is the range of frequencies or wavelengths that can pass through a filter without being attenuated. Passband in terms of filters In telecommunications, optics, and acoustics, a passband is the portion of spectrum, between… …
33Photoconductive atomic force microscopy — (pc AFM) is a scientific technique.. Multi layer photovoltaic cells have gained popularity since mid 1980s.[1] At the time, research was primarily focused on single layer photovoltaic (PV) devices between two electrodes, in which PV properties… …
34Photonic metamaterial — Electromagnetism Electricity · …
35Moog Concertmate MG-1 — For other uses, see MG1 (disambiguation). Concertmate MG 1 Manufactured by Moog Music Dates 1981 …
36Wadley Loop — The Wadley Loop circuit was designed by Dr. Trevor Wadley in the 1940 s and was first used for a stable Wavemeter. Overview In a traditional superheterodyne radio receiver, most oscillator drift and instability occurs in the first frequency… …
37Mars Science Laboratory — mission 2011 concept artwork Operator NASA Major contractors Boeing Lockheed Martin …
38Mars Science Laboratory — Computergrafik von „Curiosity“ auf dem Mars Da …
39Laser diode — Top: a packaged laser diode shown with a penny for scale. Bottom: the laser diode chip is removed from the above package and placed on the eye of a needle for scale …
40Variable capacitor — Rotary variable capacitor A variable capacitor (also known as a variable air condenser ) is a capacitor whose capacitance may be intentionally and repeatedly changed mechanically or electronically. Variable capacitors are often used in L/C… …
