threshold voltage


threshold voltage

[′thresh‚hōld ‚vōl·tij] (electronics) In general, the voltage at which a particular characteristic of an electronic device first appears. The voltage at which conduction of current begins in a pn junction. The voltage at which channel formation occurs in a metal oxide semiconductor field-effect transistor. The voltage at which a solid-state lamp begins to emit light. (nucleonics) The lowest voltage at which all pulses produced in a Geiger counter by any ionizing event are of the same size, regardless of the size of the initial ionizing event.