LDT with Crimps Vibration Sensor/Switch
examples of Properties (continued)
TABLE 2: LDT0 as Flexible Switch (see Fig 2)
Tip Deflection
2 mm
5 mm
10 mm
max (90 Ε )
Charge Output
3.4 nC
7.2 nC
10 - 12 nC
> 30 nC
o/c Voltage Output
7V
15 V
20 - 25 V
> 70 V
Experiment #3
LDT0 Electrical Frequency Response -
when the source capacitance of around 480 pF is
connected to a resistive input load, a high-pass
filter characteristic results. Using an electronic
noise source to generate broad-band signals, the
effect of various load resistances was measured
and the -3 dB point of the R-C filter determined
(see Table 3, Fig. 3).
TABLE 3: LDT0 Electrical Frequency Response
(see Fig 3)
(480 pF source capacitance)
Load Resistance
1 Megohm
10 Megohm
100 Megohm
-3 db Frequency
330 Hz
33 Hz
3.3 Hz
LDT0-028K Piezo Vibration Rev 1
www.meas-spec.com
3 of 4
10/13/2008
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