Patent ID: 6154032
Filing Date: 2000-11-28
Classification: H02J,Y02B,Y02E,Y04S

Abstract:
An identification circuit for indicating selection of a branch circuit associated with a particular circuit breaker said circuit breaker, operably connected in series between a bus bar and a hot lead of said branch circuit to provide overload protection to said branch circuit, said identification circuit comprising:an indicator lamp having first and second terminals, said indicator lamp illuminating upon current flowing between said first and second terminals of said indicator lamp;a rectifier operably connected between said hot lead and said first terminal of said indicator lamp;a band pass filter having an input and an output, said band pass filter input being operably connected to said hot lead, said band pass filter being constructed to pass a predetermined frequency from said input to said output while substantially blocking all other frequencies; anda controlled switch having a gate, a first terminal and a second terminal wherein current flows between said first and second terminals and through said controlled switch upon application of appropriate biasing to said gate, said first and second terminals being operably connected in series with said indicator lamp, and said gate being operably connected to said output of said band pass filter,whereby upon receipt of a signal having said predetermined frequency on said hot lead, said band pass filter output biases said gate causing current to flow through said controlled switch and, in turn, said indicator lamp, thus identifying that said circuit breaker, associated with said indicator lamp, is operably connected to said branch circuit into which a signal at said predetermined frequency has been injected.