overvoltage crowbar

overvoltage crowbar

[¦ō·vər¦vōl·tij ′krō‚bär]
(electricity)
A circuit that monitors the output of a power supply and prevents the output voltage from exceeding a preset voltage, under any failure condition, by having a low resistance (crowbar) placed across the output terminals when an overvoltage occurs.
References in periodicals archive ?
quiescent supply current Features * Input logic levels are TTL * An overvoltage crowbar and and 2.