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Definition of "Cutoff" |
The condition in a tube or transistor whereby the reverse bias prevents current flow. A condition or frequency above or below which a circuit fails to respond. A minimum value of voltage or current applied to an active device which stops the device from operating in a particular manner. The point at which the current through a transistor [or other device] is cut off by the action of the Base [or control electrode]. The point at which the minimum base current allows a transistor to conduct, below which the transistor stops conducting. / A luminary light distribution with zero candela at an angle of 90 degrees or above and not more than 10% of emitted light above 80 degrees. / Condition when an active device is biased such that output current is near zero or beyond zero. |
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