What is "biasing"

Bias \Bi"as\, v. t. [imp. & p. p. Biased (b[imac]"ast); p. pr. & vb. n. Biasing.] To incline to one side; to give a particular direction to; to influence; to prejudice; to prepossess.

Me it had not biased in the one direction, nor should it have biased any just critic in the counter direction.
--De Quincey.

alt. (present participle of bias English) vb. (present participle of bias English)

Biasing in electronics could be the method of establishing predetermined voltages or currents at various points of an electronic circuit for the purpose of establishing proper operating conditions in electronic components. Many electronic devices such as transistors and vacuum tubes, whose function is processing time-varying ( AC) signals also require a steady (DC) current or voltage to operate correctly — a bias. The AC signal applied to them is superimposed on this DC bias current or voltage. The operating point of a device, also known as bias point, quiescent point, or Q-point, is the steady-state (DC) voltage or current at a specified terminal of an active device (a transistor or vacuum tube) with no input signal applied. A bias circuit is a portion of the device's circuit which supplies this steady current or voltage.

The term is also used for an alternating current (AC) signal applied to some electronic devices which is similarly required for correct operation, such as the tape bias signal applied to magnetic recording heads used in magnetic tape recorders.

Biasing may refer to:

• Biasing, in electronics, establishing predetermined voltages and/or currents to set an appropriate operating point
• Biasing of outcomes, referring to changing the probability of a particular event occurring