Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1991-02-07
1993-02-02
Laroche, Eugene R.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
3072961, H03K 301
Patent
active
051840316
ABSTRACT:
The external power supply voltage applied to an external power supply terminal is supplied to an internal stepdown circuit and a switch circuit. The value of the external power supply voltage is detected by an external voltage detecting circuit, and if the value is greater than a predetermined value, the internal stepdown circuit operates, the external power supply voltage is stepped down by the internal stepdown circuit and supplied to an internal circuit as an internal power supply voltage. On the other hand, if the value of the external power supply voltage is smaller than the predetermined value, the internal stepdown circuit does not operate, and instead the switch circuit operates and the external power supply voltage is supplied via the switch circuit to the internal circuit as the internal power supply voltage.
REFERENCES:
patent: 4961008 (1990-10-01), Fujwara
Hayakawa Shigeyuki
Yanagisawa Leiichi
Kabushiki Kaisha Toshiba
LaRoche Eugene R.
Ratliff R. A.
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