New simple isolation amplification temperature measuring circuit

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One-piece inductor

This circuit utilizes the inexpensive isolation amplifier ISO212P and current reference source REF200 to form a platinum resistance temperature measurement circuit with excellent performance and isolation. REF200 provides 200uA current to Pt100. In the temperature measurement range of -200~850°C, the isolation amplifier ISO212P outputs 1~5V of standard. To ensure measurement accuracy, 10uF is connected in parallel to the input isolation ground at ±V output. Capacitor decoupling, ISO212P is powered by an external +15V single supply, and 0.1uF decoupling capacitors should be ceramic capacitors.

Isolated and amplified platinum resistance temperature measurement circuit diagram




Fingerprint Lock Motor

Fingerprint Lock Motor introduction:

Basic security work, lock body responsible for the security door lock body responsible for opening and closing lock, the lock body Lock Motor is of crucial importance.


Functions: it is widely used in various intelligent locks, such as Shared bicycle lock, fingerprint lock, glass lock, safe lock, hotel lock, family lock, inductive smart lock, etc


Features:Fingerprint Lock Motoris based on micro precision reducer development, small intelligent micro precision reducer can do 10 mm in diameter, is widely used in safe, locks, smart locks, sensor intelligent lock;

This kind of motor has the characteristics of low noise, low energy consumption, small volume, light quality, high precision, large torque and durability

Method of use: the best stable in horizontal plane, installed on the Fingerprint Lock Motoroutput shaft parts, cannot use a hammer to knock, knock prone to press into the dc Fingerprint Lock Motor drive, may cause damage to internal components, and cannot be used in the case of blocked.

Lock motor

Operating temperature range:

lock motor should be used at a temperature of -10~60℃.

The figures stated in the catalog specifications are based on use at ordinary room temperature catalog specifications re based on use at ordinary room temperature (approximately20~25℃.

If a lock motor is used outside the prescribed temperature range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.Depending on the temperature conditions ,it may be possible to deal with them by changing the grease of the motor's parts.Please feel free to consult with us about this.


Storage temperature range:

Fingerprint Lock Motor should be stored ta a temperature of -15~65℃.

In case of storage outside this range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.


Service life:

The longevity of Fingerprint Lock Motor is greatly affected by the load conditions , the mode of operation,the environment of use ,etc.Therefore,it is necessary to check the conditions under which the product will actually be used .The following conditions will have a negative effect on longevity.Please consult with us should any of them apply.



●Use with a load that exceeds the rated torque

●Frequent starting

●Momentary reversals of turning direction

●Impact loads

●Long-term continuous operation

●Forced turning using the output shaft

●Use in which the permitted overhang load or the permitted thrust load is exceeded

●A pulse drive ,e.g.,a short break,counter electromotive force,PWM control

●Use of a voltage that is nonstandard as regards the rated voltage

●Use outside the prescribed temperature or relative-humidity range,or in a special environment.

●Please consult with us about these or any other conditions of use that may apply,so that we can be sure that you select the most appropriate model.


when it come to volume production,we're a major player as well .each month,we rurn out 600000 units,all of which are compliant with the rohs directive.Have any questions or special needed, please contact us, we have the engineer group and best sales department to service to you

Looking forward to your inquiry. Welcome to our factory.

Lock motor

Fingerprint Lock Motor,Motor For Fingerprint Lock,Gear Motor For Fingerprint Lock,Dc Motor For Fingerprint Lock

Shenzhen Shunchang Motor Co., LTD. , https://www.scgearmotor.com