What is the latch solenoid?
Lattle solenoid is an electromagnetic device designed to supply activation force, as is the case with conventional solenoid, but then to maintain solenoid in the activated state without any electric current applied to the coil. This is achieved by installing a set of permanent magnets around the bottom of the coil core. Once the magnetic field generated by the powered solenoid coil pulled the piston to the center of the coil, the power supply is cut on the coil. It would usually release the piston, but in the case of adhesive solenoid, the magnets activated solenoid without a flow of drainage from the energy source. When a solenoid is deactivated, the pulse of the current in the opposite direction to the control current, which repels the piston, deactivates the solenoid.
solenoids are one of the most common electromagnetic drives with short pull in general use. They are usually very simple devices and consist of a static, hollow wire coil and a spring metal metal plunger. When the coil is applied to the elElectric current in the correct orientation of the polarity, a strong magnetic field is created around the coil. This attracts the piston towards and to the core of the coil and quickly adds switching or control movement in this process. Cutting power on the coil causes the magnetic field to collapse and release the piston, which is towed in the spring to the neutral position.
When the solenoid is necessary to remain active for a long time, the power of the coil can be left until the solenoid requires deactivation. Although it works, it causes the coil to generate considerable heat and waste electricity. The solenoid latch deals with this problem including a set of permanent magnets arranged around the coil at the point where the piston rests at the end of its Activation stroke. These magnets are strong enough to hold the plunger in place, allowing the latch solenoid to remain active, even if the coil power is cut off. This prevents overheating of the coil and from the point of viewAnd electrical consumption increases more efficient solenoid.
When it is necessary to deactivate the latch solenoid, a short power pulse is supplied to the coil with contradictory orientation of the polarity to the activation current. This creates a short contradictory magnetic field that repels the piston far enough to prevent the magnets to cease to have an effect, allowing the spring to pull the piston back to its neutral position. This operating method requires a slightly different type of solenoid control unit capable of creating a required reverse polarity power pulse.