Electric power conversion systems – Current conversion – With starting arrangement
Patent
1988-05-20
1989-12-26
Beha, Jr., William H.
Electric power conversion systems
Current conversion
With starting arrangement
363 25, 363 97, H02M 75375
Patent
active
048902144
ABSTRACT:
A start controlling circuit for delivering a start signal to a constant current generator to cause the latter to supply an output current to a load through which a load current flows. The load current is detected to produce a detection voltage indicative of the load current. A variable control voltage is converted into a first pulse sequence having a repetition period decreasing in response to a rise in the control voltage, and the first pulse sequence is processed into a second pulse sequence having a pulse width which increases in response to such a rise. The second pulse sequence is supplied to the constant current generator as the start signal. An error signal is produced representing the difference between the detection voltage and a gradually rising d.c. reference voltage. The error signal is amplified and applied as the control voltage. The reference voltage is varied when variations in the load result in a change in the load current.
REFERENCES:
patent: 3818307 (1974-06-01), Hamilton et al.
patent: 4598351 (1986-07-01), Fair et al.
patent: 4716359 (1987-12-01), Numata et al.
Beha Jr. William H.
NEC Corporation
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