參數(shù)資料
型號(hào)： PIEZO_SYSTEMS_PRODUCT_CATALOG
英文描述： 600mA, 500kHz Step-Down Switching Regulator in SOT-23; Package: SOT; No of Pins: 6; Temperature Range: -40°C to +125°C
文件頁數(shù)： 26/52頁
文件大小： 643K
代理商： PIEZO_SYSTEMS_PRODUCT_CATALOG
186 Mssachusetts Avenue Cambridge, MA02139 Te: (617) 547-1777 Fax: (617) 354-2200 Web wwwpezocom E-mail: sales@pezocom
The piezoelectric chopper is a resonant device which
moves a shutter attached to the front tip of its blade.
Piezoceramic on one side of the blade can be used for
excitation while the piezoceramic on the other side can
be used for drive circuit feedback.
Compared to electro-magnetically driven wheels and tun-
ing forks, the piezo chopper is lightweight, small, pro-
duces no EMI, operates over a wide temperature range,
low power, reliable, and cost effective.
Custom Configurations: Other piezo chopper features
are available in custom configurations,including: different
amplitudes and frequencies, high temperature operation
(up to 150°C), low temperature / low vacuum operation,
and non-magnetic constructions, and two bladed (tuning
fork configurations.
CHOPPER DESCRIPTION
SPECIFICATIONS
P IE Z O E L E C T R IC C H O P P E R
Piezoelectric choppers are powered electrostatically
rather than magnetically. The oscillating blade and shutter
is driven by a piezoelectric bending element operating at
resonance.
PRINCIPLE OF OPERATION
The evaluation kit includes a 100 Hz piezo chopper and an
inverter drive circuit.
CHOPPER EVALUATION KIT
FANS &
RESONATORS
Piezo Chopper
Piezo Chopper Evaluation Kit
RCH1-005
RCH1K-005
$249
$350
$199
$59
$39
ORDERING INFORMATION
PART NO.
1 pc.
5 pc.
25 pc.
100 pc.
P
IEZ O
S
Y ST EMS
, I
NC
.
When being driven sinusoidally, the 100 Hz piezo chop-
per requires an oscillating drive signal matched to the res-
onant frequency of the blade. This may be provided by a
frequency generator/amplifier or inverter circuit. Piezo
Systems provides a simple inverter circuit (PN: EIN-405
described on page 9). Output frequency is adjusted man-
ually by turning a trim pot on the PCB.
INVERTER DRIVE CIRCUIT
2.52 (64.0)
.50
(12.7)
.25
(6.4)
.66
(16.8)
.130
(3.3)
.235
(6.0)
.375
(9.5)
.25
(6.4)
.550
(14.0)
.125
(3.2)
.125
(3.2)
Shutter
Resonator
Mount
#2-56 Tapped
3 plcs.
20
30
40
50
60
10
0
Drive Voltage (Vp-p)
S
0.1
0.2
0.3
0.4
0.5
0
Drive Voltage:
Nominal Resonant Frequency:
Shutter Amplitude:
Feedback Voltage:
Weight:
Mounting Holes:
Temperature Range:
60 Vp-p
100 Hz
.42 Inches p-p
20 Vp-p
4.8 grams
#2-56 tapped holes, 3 plcs.
0° to 60° C
26
CATALOG #3, 1998
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