Friday, May 31, 2019

Variable Amplifier Impedance - Rod Elliot


An interesting article:
http://sound.whsites.net/project56.htm


See also:
Nelson Pass


On analog tape recording, record heads are constant current driven by a large output impedance.


A microphone can constant current drive a Pleiade L filter (inductor in parallel). Pleiades (R,L) filters produce a gentler slope rising treble (gentle slope low cut or high pass).









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