Electrical transmission or interconnection systems – Plural supply circuits or sources – Selective or optional sources
Patent
1985-08-09
1986-12-09
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Selective or optional sources
307 43, 307 2, 340392, 340 84, H02J 1700, G08B 300
Patent
active
046282130
ABSTRACT:
A multimode electronic circuit for driving bells or other electromagnetic devices. An important feature of this design is that it allows one circuit to function in a variety of modes: either in the vibrating mode or single stroke mode, both being operative with either an AC or DC source.
REFERENCES:
patent: 3493966 (1970-02-01), Human
patent: 3868683 (1975-02-01), Darrow
General Signal Corporation
Hubbard Robert R.
Logan Sharon D.
Reichman Ronald
Shoop Jr. William M.
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