Power supply selectively providing series and parallel regulatio

Details Power supply selectively providing series and parallel regulatio Power supply selectively providing series and parallel regulatio

1992-02-06

1993-11-16

Sterrett, Jeffrey

Electricity: power supply or regulation systems

In shunt with source or load

Using a three or more terminal semiconductive device

323226, 323268, 323280, 323281, G05F 1613

Patent

active

052627128

ABSTRACT:
The invention relates to a method and a circuit array for regulating the supply voltage of a load as may be found, for example, in the form of an integrated circuit in a chip card. An integrated circuit of this type contains a non-volatile memory and the control logic needed to read out the information stored in the non-volatile memory, but with the transmission of both energy and data being wireless, for example inductive. Data is transmitted by suitable modulation of the voltage supply. In order for the reader to clearly evaluate the read-out logic states, it is proposed in accordance with the invention that during output of the first logic level the supply voltage of the load is generated by serial regulation and that during output of the second logic level the terminal voltage of the voltage source is under parallel regulation.

REFERENCES:
patent: 3124697 (1964-03-01), Trenchard
patent: 3310731 (1967-03-01), Ostroff et al.
patent: 3464036 (1969-08-01), Robinson et al.
patent: 4168477 (1979-04-01), Burchall
patent: 4232261 (1980-11-01), Lingstaedt et al.
patent: 4352054 (1982-09-01), Grunsch et al.
patent: 4459537 (1984-07-01), McWhorter
patent: 4584517 (1986-04-01), Schwob
patent: 4584518 (1986-04-01), Higashino et al.
patent: 4812736 (1989-03-01), Albach et al.
patent: 5059888 (1991-10-01), Van Tuijl
Elektronik Notizen, "Elektronik sogar im Schlussel" Sep. 19, 1986, p. 12.

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