varactor
/vəˈraktə
/noun
A semiconductor diode with a capacitance dependent on the applied voltage.The most significant use of varactors to date has been as the basic component in parametric amplifiers....
- They key to understanding how a varactor or varicap diode works is to look at what a capacitor is and what can change the capacitance.
- This nonlinearity allows the varactor to be used also as a harmonic generator.
Origin
1950s: from elements of variable reactor.
- ascription
- as cross as two sticks
- ascus
- ASD
- (as) daft as a brush
- (as) dead as a doornail
- (as) dead as a (or the) dodo
- (as) dead as mutton
- (as) deaf as a post
- ASDIC
- as different as (or like) chalk and cheese
- (as) drunk as a lord (or skunk)
- (as) dry as a bone
- (as) dry as a Pommy's towel
- (as) dry as dust
- (as) dull as dishwater (or ditchwater)
- -ase
- ASEAN
- (as) easy as falling off a log
- (as) easy as pie
- as easy as winking
- (as) easy (or simple) as ABC
- a second thought
- aseismic
- asepsis