Oscillators – Solid state active element oscillator – Transistors
Reexamination Certificate
2006-10-10
2006-10-10
Kinkead, Arnold (Department: 2817)
Oscillators
Solid state active element oscillator
Transistors
C331S111000, C331S143000, C331S144000, C331S03600C
Reexamination Certificate
active
07119626
ABSTRACT:
An oscillation circuit has: a first MOS transistor having a gate connected to a first node and a source connected to the ground; a second MOS transistor having a gate connected to a second node and a source connected to the ground; a current supply circuit supplying a control current; a threshold correction circuit supplying a correction current; and a charge-discharge circuit which supplies a charge current which is a superposition of the control current and the correction current to the first node and the second node alternately in response to potentials of drains of the first and the second MOS transistors. The threshold correction circuit increases the correction current as threshold voltages of the first and the second MOS transistors become large.
REFERENCES:
patent: 3946330 (1976-03-01), Takahashi
patent: 5896070 (1999-04-01), Tchamov et al.
patent: 62-274913 (1987-11-01), None
Kinkead Arnold
McGinn IP Law Group PLLC
NEC Electronics Corporation
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