electronically tunable filter

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Michael Steer — Michael B. Steer (born 1956 in Queensland, Australia) is a Lampe professor of Electrical and Computer Engineering at North Carolina State University and one of the leading electrical engineers in today s Analog/RF and Microwave world. He has… … Wikipedia
Variable 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… … Wikipedia
Microscopy — is the technical field of using microscopes to view samples and objects that cannot be seen with the unaided eye (objects that are not within the resolution range of the normal eye). There are three well known branches of microscopy, optical,… … Wikipedia
Diode — Figure 1: Closeup of a diode, showing the square shaped semiconductor crystal (black object on left) … Wikipedia
Nikon D300 — with AF S Nikkor 18 200 VR lens Type Digital single lens reflex Sensor Nikon DX format 23.6 mm × 15.8 mm CMOS … Wikipedia

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