Start signal detector circuit

Details Start signal detector circuit Start signal detector circuit

2007-01-11

2010-02-16

Tang, Minh N (Department: 2829)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

C324S520000

Reexamination Certificate

active

07663394

ABSTRACT:
A variation of a threshold of diode-connected transistors is compensated for to maintain a constant rectification efficiency of a rectifier circuit, thereby enabling stable detection of a start signal. A constant voltage is applied to DC bias terminal103of cascaded half-wave voltage doubler rectifier circuits (including MOS transistors M1to M4and capacitors C1to C4) forming a rectifier circuit, and a voltage equal to the sum of the constant voltage applied to DC bias terminal103and a variation ΔVt of a threshold voltage of the MOS transistors is applied to DC bias terminal104of cascaded half-wave voltage doubler rectifier circuits (including MOS transistors M5to M8and capacitors C5to C8) forming a bias circuit.

REFERENCES:
patent: 6429638 (2002-08-01), Wight et al.
patent: 2007/0063708 (2007-03-01), Baker
patent: 60-144009 (1985-07-01), None
patent: 2004-194301 (2004-07-01), None
patent: 2004-328061 (2004-11-01), None
patent: 2006-319549 (2006-11-01), None
F. Dickson, “On-chip high-voltage generation in MNOS integrated circuits using an inproved voltage multiplier technique”, IEEE Journal of Solid-State Circuits, 1976, vol. 11, No. 3, p. 374-378.

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