Assertion: buffer amplifier | /r/HasAspect | high input impedance
Facets:
value: very
type: DEGREE
Source sentences:
text: Often buffer amplifiers have a gain of one, i.e. they do not actually amplify, so that their output is the same amplitude as their input, but buffer amplifiers have a very high input impedance and a low output impedance and can therefore be used as an impedance matching device.