An electromagnetic locking device is disclosed including a barrel and a plug which are able to move relative to one another when in an unlocked condition. A locking mechanism, within the locking device, includes a pair of shuttles which include permanent magnets which are caused to move in opposite directions by an electromagnet to push the shuttles into respective recesses so as to not straddle the junction between the plug and barrel. Also forming part of the locking device are one or more jammer mechanisms which include ferromagnetic jammers which are drawn into recesses when under the influence of external magnets. If a strong external magnet is used to draw the shuttles into the recesses therefore not straddling the recesses, the jammers are drawn into the recesses and straddle that junction thereby maintaining the locked condition.

A breathalyzer car key locking device comprises a mouthpiece, an alcohol sensor, a locking mechanism, and a processing element. The mouthpiece receives breath from a user. The alcohol sensor receives the user's breath from the mouthpiece, determines a blood alcohol level of the breath, and outputs an electronic blood alcohol level signal whose voltage level or digital data value varies according to the determined blood alcohol level. The locking mechanism exists in one of two states including a locked state and an unlocked state. The locking mechanism retains a car key in the locked state and releases the car key in the unlocked state. The processing element receives the blood alcohol level signal from the alcohol sensor, and transmits an electronic locking signal that places the locking mechanism in the locked state when an aspect of the blood alcohol level signal is greater than or equal to a predetermined threshold.

A breathalyzer car key locking device comprises a mouthpiece, an alcohol sensor, a locking mechanism, and a processing element. The mouthpiece receives breath from a user. The alcohol sensor receives the user's breath from the mouthpiece, determines a blood alcohol level of the breath, and outputs an electronic blood alcohol level signal whose voltage level or digital data value varies according to the determined blood alcohol level. The locking mechanism exists in one of two states including a locked state and an unlocked state. The locking mechanism retains a car key in the locked state and releases the car key in the unlocked state. The processing element receives the blood alcohol level signal from the alcohol sensor, and transmits an electronic locking signal that places the locking mechanism in the locked state when an aspect of the blood alcohol level signal is greater than or equal to a predetermined threshold.

A magnetic anti-theft device, includes: a control circuit, in connection with a plurality of magnetic sensors and a control unit; the plurality of magnetic sensors, allowing different magnetic induction strengths to be preset; and a unlock piece, configured with a plurality of magnetic elements corresponding to the magnetic induction strengths of the plurality of magnetic sensors, whereby, when the correct unlock piece is placed on the magnetic sensors, the plurality of magnetic sensors will induct correct magnetic forces, the control unit is driven to release a monitoring state after interpretation of the control circuit; if the induction is incorrect, the control unit is driven to form a warning action after the interpretation of the control circuit so as to achieve an anti-theft effect and increase safety effectively probably because the magnetic force of the magnetic element of the unlock piece is too small or too large.

A digital lock including at least two magnets is disclosed. One magnet is a semi-hard magnet and the other magnet is a hard magnet. The hard magnet is configured to open or close the digital lock. The semi hard magnet and the hard magnet are placed adjacent to each other. A change in magnetization polarization of the semi hard magnet is configured to push or pull the hard magnet to open or close the digital lock.

A locking system is described. The locking system, includes a lock. The lock includes a semi-hard magnet and a hard magnet. The hard magnet is configured to move to open or close the lock, the lock is self-powered using near field communication (NFC), and the lock is digitally controlled using a mobile application.

A door lock for a domestic electrical appliance such as, for example, a washing machine of the top loader type includes a lock module, a housing shell for the floating mounting of the lock module on a housing wall portion of a body of the domestic appliance, a locking member which is arranged to be movable between an unlocking position and a locking position, and an electrically controllable actuator for actuating the locking member. The lock module has an insertion opening for insertion of a closing element on closing of the door of the domestic appliance. The locking member in its unlocking position allows the closing element to move out of the insertion opening and in the locking position effects blocking of the closing element against moving out of the insertion opening. At least one centring slope for the closing element is formed at the insertion opening.

Provided are a motor driving circuit, a control method therefor, and a driving chip. The motor driving circuit includes a logic module and a push-pull module, a channel selection module, an instruction recognition module, and an isolating switch module. An input signal is outputted by the logic module and the push-pull module to control the motor. The channel selection module is configured to select a channel for the input signal to make the input signal to be connected to the isolating switch module or the instruction recognition module, or disconnected. The instruction recognition module is configured to perform a corresponding operation on the isolating switch module according to an inputted instruction. The isolating switch module is configured to receive an instruction of the channel selection module and an instruction of the instruction recognition module to connect or disconnect the logic module.

The invention provides a digital lock including at least two magnets. One magnet is a semi hard magnet and the other magnet is a hard magnet. The hard magnet is configured to open or close the digital lock. The semi hard magnet and the hard magnet are placed adjacent to each other. A change in magnetisation polarisation of the semi hard magnet is configured to push or pull the hard magnet to open or close the digital lock.

The invention provides a digital lock including at least two magnets. One magnet is a semi hard magnet and the other magnet is a hard magnet. The hard magnet is configured to open or close the digital lock. The semi hard magnet and the hard magnet are placed adjacent to each other. A change in magnetisation polarisation of the semi hard magnet is configured to push or pull the hard magnet to open or close the digital lock.