LF-
6. Physical Characteristics Test Item Test Conditions Performance Requirements Sounder shall be measured after being applied vibration of amplitude of 1.5 mm with 10 to The measured values shall 6-1. Vibration 55 Hz band of vibration frequency to each meet Table 1. three mutually perpendicular directions for 2 hours. No break on the wire. Wire On the ceramic disc, Horizontal: 500g min. No electrode dislodge on 6-2. Pull Strength Vertical: 300g min. the disc. 7.
8. Others 8-1. Please pay attention never to be applied DC voltage to piezo sounder. 8-2. Please pay attention to protect operating circuit from surge voltage provided by something for force such as falling, shock and temperature changing. 8-3. The resistor should be used as shown in Fig. A. A suitable resistance value should be chosen. Instead of this measure, a diode may also be applied as shown in Fig. B. _______ _______ IC IC _______ _______ Fig. A R Fig. B 8-4.
Dimensions Unit: mm ± 0.2 Fig. 1 Test Circuit Fig. 2 FREQUENCY RESPONSE CURVE OF PE30W25A Input Voltage: 9Vp-p Square Wave Measuring Distance: 10cm FM0761A 版本: V1.2 JAN.
