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JPS4959524

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DESCRIPTION JPS4959524
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a conventional ultrasonic
vibration apparatus, and FIG. 2 is a block diagram of an embodiment of the apparatus of the
present invention. Fig. 2-65-
DETAILED DESCRIPTION OF THE INVENTION As shown in FIG. 1, a conventional ultrasonic
vibration device has a single electrode plate on one side of a lou 12 gas crystal plate a and 13
pairs of electrode plates C on the other side. , T 'to install both source vibration 14 motions, the
bottom of the horn d firmly fixed to the full open 15 and the electrode plate 15, the electrode
plate c, the output of the amplifier B 1 connection is made by connecting 17 electrode plates b
and c 'between the input terminals of amplifier B, and the output of amplifier B or 18 electrode
plates is applied between e Therefore, the piezoelectric crystal piece between the electrode plates
b 19 and 6 vibrates and the horn d vibrates, and the vibration of the horn d vibrates the pressure
plate between c '+1) l air crystal plate vibrates A voltage is generated between the electrode
plates b and c ', and the voltage is positively fed back to the amplifier B so that the electrode
plate of the ultrasonic vibration triple A, the piezoelectric crystal plate between c and the horn 4d
Continuous vibration When being moved, the piezoelectric crystal plate of the electrode plate b5,
CI'q'l does not correspond to the provision of the electrode plate C '(.. Can be efficiently moved
side-by-side, and because the capacitance between the electrode plates c and c 'is 9 large because
the electrode plates C9Qgl are close to each other, the voltage generated between the electrode
plates b and c' is amplifier + on And the efficiency to drive the horn d further decreases. The 12th
proposal can eliminate the above-mentioned conventional drawbacks, and the embodiment of the
present invention will be described based on 11 with reference to the drawings. 1 is an upper
end portion or a reduced diameter portion 21j The step horn, which is the lower end portion or
the enlarged aperture portion 3, 1 · · 4 is one 14 il of the piezoelectric crystal plate 5! The
ultrasonic transducer is formed by attaching 17 the electrode plate 6 to the lth, and the other
side of the piezoelectric 18 crystal plate 5 of the ultrasonic transducer is wound around the acid
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amount of the horn 1 19. An ultrasonic transducer 7 is formed by mounting an electrode plate 9
on one side of a piezoelectric crystal plate 8 and is fixed to the side surface of the enlarged
aperture of the horn 1 2) l3. 1G denotes an amplifier, which comprises the output voltage of the
amplifier 2 applied between the electrode plate 6 and the horn 1 and the input terminal of the
amplifier 3 connected between the electrode @ 9 and the horn 1 is there. The fifth solution has
the above-mentioned configuration, and the output pressure IJ of amplifier 10 is applied between
the horn 1 and the electrode plate 6. 1 vibrates, and the piezoelectric crystal plate 8 vibrates due
to the vibration of the horn l, and a voltage is generated between the rehorn 1 and the electrode
plate 9, and the voltage is fed back to the input gate of the input amplifier alO. The horn 1 is
driven by vibration in a self-sustaining manner. In the present invention, a piezoelectric 13 air
crystal plate 5.8 is fixed to the bottom and the invert of the horn 1 and electric bridges are
provided on both sides of each of the piezoelectric crystal plate II, and the piezoelectric crystal
plate The output voltage of the amplifier 810 is applied between the electrode plates on the 15
side of the S wall 15 to connect the 17 electrode plates of the piezoelectric crystal plate 8 on the
1 Ir 11 side to the input terminal of the amplifier 1 h. Then, the piezoelectric crystal plate which
can be attached to the piezoelectric crystal plate can be efficiently vibrated and driven, and the
piezoelectric crystal plate to be attached to the 2 ′ ′ bottom surface and the side of the horn
and the Lζ is separated. 13) The voltage which is positively fed back to the amplifier can be
sufficiently increased by two, so that the horn can be more effectively driven to vibrate.
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