Drive circuit

Details Drive circuit Drive circuit

2005-01-18

2005-01-18

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C327S112000, C327S390000, C327S331000, C326S081000

Reexamination Certificate

active

06844769

ABSTRACT:
The amplitude expansion circuit as a main part of a drive circuit includes: a VM DC power supply line to which a voltage VM is applied; a VH DC power supply line to which a voltage VH roughly twice as high as the voltage VM is applied; an inverter circuit receiving a pulse signal oscillating between the ground voltage and the voltage VM; another inverter circuit receiving a pulse signal oscillating between the voltage VM and the voltage VH in correspondence with the oscillation of the voltage level of the above pulse signal; a p-channel MOSFET having a gate receiving an output from the inverter circuit; another p-channel MOSFET having a gate connected to the VM DC power supply line; an n-channel MOSFET having a gate connected to the VM DC power supply line; and another n-channel MOSFET having a gate receiving an output from the other inverter circuit. A common connection node of the p-channel MOSFET and the n-channel MOSFET works as the output terminal of the amplitude expansion circuit.

REFERENCES:
patent: 5739700 (1998-04-01), Martin
patent: 5896045 (1999-04-01), Siegel et al.
patent: 5973508 (1999-10-01), Nowak et al.
patent: 6031394 (2000-02-01), Cranford et al.
patent: 6040729 (2000-03-01), Sanchez et al.
patent: 05-014174 (1993-01-01), None

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