Jinlong Machinery & Electronics
Photo of Jinlong Machinery pancake coin vibration motor, Double Magnet Coin Vibration Motors

Double Magnet Coin Vibration Motors

Photo of Jinlong Machinery coin vibrator motor, Double Magnet Coin Vibration Motors
Standard coin vibration motor (with brushes) are not noted for their fast rise and fall times and hence are not the best choice for haptic feedback applications. They incorporate a single magnet situated under the motors rotating voice coils / counter weight assembly, at the base of the coin motor. Our engineers recently discovered that by adding a second magnet above the voice coil / counter weight assembly, effectively sandwiching it between both magnets, many of the vibration motors performance characteristics dramatically improved.  Most notable is that this “Double Magnet”  design greatly improved the rise / fall times as well as the G force.  Power consumption is comparable to that of the single magnet design. 

Model # Tech Type Rise Time Fall Time G force Current (mA) Vibration Frequency Driver IC Required
CDM0834B004L Double Magnet 35 50 1.40 48 167 NO
C0834B011F BRUSH 90 50 0.85 69 200 NO
G0832012 LRA 50 80 1.40 58 235 YES
W0825AB001G BRUSHLESS 70 90 1.00 54 250 NO
CDM1027B003L Double Magnet 35 50 1.60 52 250 NO
C1020B111F BRUSH 90 50 1.10 61 150 NO
G0832012 LRA 50 80 1.40 58 235 YES
W0934AB007G BRUSHLESS 70 90 1.40 50 192 NO

As can be seen from the table above, the rise / fall times are better than that of an LRA and there is no need for an external driver IC.  They can be driven with DC voltage and do not require a driver IC.   Being a brush type motor, the over motor lifetime (100K cycles) is not as good as that of a coin LRA  (1000K cycles).

Pricing is slightly higher than that of a standard single magnet, brush type, coin vibration motor, but about 30% less than that of an LRA and even more so if you factor in the required driver IC for the LRA.

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Part Number

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motor logo
Tech.
Type
Config. Type Motor Size Voltage Current Response Time
- 50% of power
- Maximum values
Rated speed (rpm) Vibe Force (G)
Dia (mm) Thickness (mm) Rated Operating Rated (ma) MAX Typical* (ma) Avg. Rise Time (ms) Fall Time (ms)
CDM1027B003L CDM1027B003L Coin Vibration Motor DOUBLE-MAGNET 1 10.0 2.7 3.0 Vdc 2.5~3.5 Vdc 75 52 35 50 15000 1.60
CDM0834B004L CDM0834B004L Coin Vibration Motor DOUBLE-MAGNET 1 8.0 3.4 3.0 Vdc 2.5~3.5 Vdc 75 48 35 50 10000 1.40
The “typical current” is the average current from 20 motors selected at random from a given production lot. Copies of the test report showing the data collected for all 20 motors are available upon request.
 Config 1  WIRE  LEADS      Config 1.1 WIRE  LEAD  w.  CONNECTOR 

Coin Vibration Motors Config - WIRE LEADS

Coin Vibration Motors Config - WIRE LEAD w. CONNECTOR

We can supply this motor with a variety of
different connectors

 Config 2  Flexible Print Circuit    Config 3  Contact Pads for Springs / Pogo Pins

Coin Vibration Motors Config - Flexible Print Circuit

We can supply custom FPC’s for any
coin vibration motor.

Coin Vibration Motors Config - COMPRESSION SPRING MOUNT

 Config 4  BARE PCB    Config 5  Type 1 Helical Spring Contacts

Coin Vibration Motors Config - BARE PCB

Coin Vibration Motors Config - Type 1 Helical Spring Contacts

 Config 6  COMPRESSION SPRING MOUNT    Config 7  Type 2 Helical Spring Contacts

Coin Vibration Motors Config - COMPRESSION SPRING MOUNT

Coin Vibration Motors Config - Type 2 Helical Spring Contacts

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