MR. JOHNNY BROWN, M.S., MFTI
Marriage and Family Therapists at Monterey Rd, Morgan Hill, CA
License number
California 74938
Category
Marriage and Family Therapists
Type
Marriage & Family Therapist
Address
Address
2
16275 Monterey Rd SUITE C, Morgan Hill, CA 95037
149 Arcadia Ave, Santa Clara, CA 95051
149 Arcadia Ave, Santa Clara, CA 95051
Phone
(408) 778-5120
(408) 509-9655
(408) 509-9655
Professional information
Feed Forward Ac Voltage Regulator Employing Step-Up, Step-Down Transformer And Analog And Digital Control Circuitry
US Patent:
4429269, Jan 31, 1984
Filed:
Apr 12, 1982
Appl. No.:
6/367646
Inventors:
Johnny F. Brown - Santa Clara CA
Assignee:
Varian Associates, Inc. - Palo Alto CA
International Classification:
G05F 500
US Classification:
323301
Abstract:
A feed forward AC voltage regulator utilizes a step-up, step-down transformer to apply adjustment voltages to an unregulated AC line. Analog circuitry periodically samples the unregulated AC line input and compares it with a scaled representation of the desired line voltage. Digital circuitry converts the information from the analog sampling and comparison to an instruction command which activates an appropriate solid state switch associated with a tap on a multitap transformer connected to the regulated AC output line. The taps are successively located on the multitap transformer to provide selectable adjustment voltages of various values. The switched-in adjustment voltage is provided the proper polarity and applied to the primary of the step-up, step-down transformer, thereby applying to the secondary the adjustment voltage needed to move the regulated AC output line to the desired level.