In order for a vacuum tube (or valve) to operate in a fairly linear region of its characteristic curve, the grid element must be maintained at a bias voltage more negative than the cathode. One method for accomplishing this is "cathode bias."
Other articles related to "bias, cathode bias":
... the switchable rectifier and power amplifier bias scheme, allowing on-the-fly changes of operating mode and output power (as well as subjective tonal differences) ... The Prosonic's rear-mounted RECTIFIER/BIAS switch lets the user select from the following three options Solid-state rectification with fixed bias (marked "S.S ... Tube rectification with fixed bias (marked "AB2") ...
... Perhaps the best discussion of cathode bias, in terms of clarity and simplicity, is to be found in one of the many editions of The RCA Receiving Tube Manual, in the applications section ... Excellent discussions of cathode bias may also be found in Basic Electronics, by Bernard Grob, published in no fewer than eight editions over the years (with continued revisions after his death) by McGraw Hill ...
Famous quotes containing the word bias:
“The solar system has no anxiety about its reputation, and the credit of truth and honesty is as safe; nor have I any fear that a skeptical bias can be given by leaning hard on the sides of fate, of practical power, or of trade, which the doctrine of Faith cannot down-weigh.”
—Ralph Waldo Emerson (18031882)