Ultrasonic transducer driving circuit and ultrasonic...

Details Ultrasonic transducer driving circuit and ultrasonic... Ultrasonic transducer driving circuit and ultrasonic...

2007-09-13

2010-12-21

Pascal, Robert (Department: 2817)

Oscillators

Solid state active element oscillator

Transistors

C331S1160FE, C331S154000, C310S318000, C600S437000

Reexamination Certificate

active

07855609

ABSTRACT:
With the aim of suppressing power consumption and reducing circuit size, a positive FET is turned on in accordance with a positive pulse signal and turned off when a return voltage rises up to a positive threshold. An active ground clamp circuit causes the output line to return to the ground voltage after the elapse of a predetermined period of time. A negative FET is turned on in accordance with a negative pulse signal and turned off when the return voltage falls down to a negative threshold. The active ground clamp circuit causes the output line to return to the ground voltage after the elapse of a predetermined period of time.

REFERENCES:
patent: 4056761 (1977-11-01), Jacoby et al.
patent: 4562413 (1985-12-01), Mishiro et al.
patent: 4563899 (1986-01-01), Nakamura
patent: 4642581 (1987-02-01), Erickson
patent: 6083164 (2000-07-01), Oppelt et al.
patent: 6525530 (2003-02-01), Jansson et al.
patent: 2000-152930 (2000-06-01), None
patent: 2001-245881 (2001-09-01), None
patent: 2004-358133 (2004-12-01), None
patent: 2006-101997 (2006-04-01), None

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