Electric power conversion systems – Current conversion – Including automatic or integral protection means
Patent
1976-04-05
1978-03-14
Beha, Jr., William H.
Electric power conversion systems
Current conversion
Including automatic or integral protection means
H02H 7122
Patent
active
040794440
ABSTRACT:
A solid-state inverter having a programmed unijunction transistor oscillator for converting a d.c. supply voltage into a.c. oscillations which trigger a bistable transistor multivibrator for producing square-wave signals which are applied to a compound-connected transistor amplifier for energizing a load and having an overload protection circuit which disables the compound-connected transistor amplifier and which, in turn, deenergizes the load during the presence of an overload condition.
REFERENCES:
patent: 3200348 (1965-08-01), Kammiller et al.
patent: 3284696 (1966-11-01), Nagata et al.
patent: 3743887 (1973-07-01), Keough et al.
patent: 3832623 (1974-08-01), Boyden et al.
patent: 3875483 (1975-04-01), Farr
patent: 3875496 (1975-04-01), Carsten
patent: 3999113 (1976-12-01), McCoy
Beha Jr. William H.
McIntire, Jr. R. W.
Sotak J. B.
Westinghouse Air Brake Company
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