Electromagnet overcurrent protection circuit
Source: InternetPublisher:toothache Keywords: Protection circuit electromagnet overcurrent protection BSP Updated: 2020/01/01
Once the armature of an AC electromagnet is blocked, the magnetic gap increases, the inductance is greatly reduced, and the coil current will reach 6 to
8 times the rated current. If not discovered in time, the electromagnet will be easily burned out. Therefore, in places with harsh operating environments or important occasions, it is necessary
to install protective devices for electromagnets.
Figure 6-61 is a simple electromagnet overcurrent protection circuit .
Resistor R can be selected according to the following formula:
R=UR/I. (n), power PI. In the formula R(W)
, UR - the voltage drop on the resistor R. When the rated operating voltage of the sensitive relay is 12V, UR can be 1.5-2V
. If the operating voltage is 24V, R can be 3-4V.
J. ——The rated current when the electromagnet is in the closed state. A.
- Analysis of the working principle of the sound and light controlled delay switch circuit
- Servo motor pin diagram/working principle/application
- How to build a simple tachometer using an infrared reflectance sensor
- How to set up a cheap beam break sensor control distance scene using a reflector
- A small improvement to the temperature and water level indicator alarm
- Design and principle analysis of practical electric curtain remote control device
- Temperature control circuit design and analysis
- Infrared blocking alarm device
- Infrared detection alarm
- Bicycle anti-theft alarm
- Self-defense anti-riot circuit
- Agricultural temperature control circuit
- Biogas concentration detection line
- Simple AGC circuit in transistor radio
- Common emitter-common base wideband amplifier circuit composed of F733 integrated amplifier
- color discrimination circuit
- Guest arrival signal recognition circuit
- Fault signal trip circuit
- Motorcycle flash light circuit
- Digital stopwatch display circuit