Linear Vibration Motor Using In Withings Blood Pressure Monitor


Lra Vibration Motor NFP-ELV0832B Used In Blood Pressure Monitor

A blood pressure monitor that protects our health
Withings launched the world’s first blood pressure monitor. The excellent design provides reliable and long-life characteristics, which is well received by the public. The linear resonance actuator model NFP-ELV0832B is used in blood pressure monitors and is a wearable device. When the blood pressure is too high or too low, the vibration feedback function will be triggered, and the built-in lra vibration motor will vibrate to remind you.

LRA must be used with an external driver IC. Linear vibration motor used in wearable devices.

Features Of Smart Blood Pressure Monitor

  1. Easy to use
  2. After downloading the Withings app, just press the button to take blood pressure measurement.
  3. Connect Wi-Fi and Bluetooth to automatically synchronize the smartphone to read data.

Small Coin Type Linear Vibration Motors Data Sheet

Motor Model NFP-ELV0832B 235Hz Type
LRA Diameter Φ8±0.1 mm
LRA Thickness 3.25±0.05 mm
Weight 1.00±0.1 Gram
Resistance 22.5±10% Ω
Rated Current Max. 90 mArms Input Source: F0, 1.8Vrms AC,
sine wave
Vibration Acceleration 1.2-1.5 Grms Input Source: F0, 1.8Vrms AC,
sine wave, 100g dummy JIG
Operating Frequency 235 ± 5 Hz
Rising Time Max. 50 msec, From 0 to 50% of nominal vibration
@ 1.8Vrms,235Hz
Falling Time Max. 80 msec; From 100% to 50% of nominal vibration @ 1.8Vrms,235Hz
Mechanical Noise Max. 50 dB(A); 10cm distance from microphone,
Input Source : 235Hz, 1.8Vrms AC, sine wave
Insulation Resistance Min. 10 M; 100V DC input, between Case and Lead Wire
Life Test Operating at rated input voltage (1.8Vrms AC, Sinewave), input frequency (235Hz) for 200,000cycle, on(2sec)/off(1sec).
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