32results about How to "Prevent momentary interruption" patented technology

An electric power source system in which a momentary interruption of the electric power supply does not occur when the direction of voltage conversion is switched by a voltage conversion device that is capable of bidirectional voltage conversion. The electric power source system includes a bidirectional switching regulator that selectively switches between the voltage conversion in the step-up direction from a low-voltage system to a high-voltage system and the voltage conversion in the step-down direction from the high-voltage system to the low-voltage system, and a linear regulator, connected in parallel to the bidirectional switching regulator, that converts voltage in the step-down direction. The direction of current that flows via the bidirectional switching regulator switches from the step-up direction to the step-down direction after current flows in the step-down direction via the linear regulator.

The invention discloses an Ethernet ring network-based PBB-TE protection method, which comprises the following steps of: quickly recovering communication by utilizing wrap data messages; and triggering the switching of main and backup links by utilizing the wrap data messages. The method solves the problem of expandability of the application of the PBB-TE technology on the ring network, reduces network resources occupied by the CCM messages, and simultaneously avoids momentary interruption of the communication during switching the chains.

A radio communication control device includes a radio parameter update determination portion, a transmission power value change portion and a radio parameter update portion. The radio parameter update determination portion determines whether or not to update a radio parameter relating to at least one of a communication frequency and transmission power to a new radio parameter. The transmission power value change portion performs a transmission power change process to change a transmission power value during data transmission to a radio communication station to a smaller value in stages at predetermined intervals when the radio parameter update determination portion determines to update the radio parameter to the new radio parameter. A radio parameter update portion updates the radio parameter to the new radio parameter when the transmission power value change portion changes the transmission power value to a preset lower limit or less.

The invention provides an engine starting device which prevents intermittent disconnection with a simple circuit structure without damaging the function of the starting device even in the case of action failure of a short-circuiting switch. The engine starting device includes: a starter switch 5 which is serially connected between a power supply 3 and a starting engine 2; a resistor 6 which is serially connected with a starting engine switch; the short-circuiting switch 7 which makes the resistor be short out; and a timing circuit 8 which controls the on-off of the short-circuiting switch, electrifies the starting engine by the power supply via the starter switch and the resistor through shutting off the starter switch 5 to shut off the short-circuiting switch 7 after a delay period afterthe starter switch is shut off, such that the short-circuiting switch 7 is shut off and the resistor is short out; the contact of the short-circuiting switch 7 is a normally closed contact; before the contact of the starter switch 5 is closed, the contact of the short-circuiting switch 7 is disconnected; and after the contact of the starter switch is closed, the contact of the short-circuiting switch 7 is closed.

A selection method of transmission equipment business board bus is used in the system with a main and a secondary business control board and a dual bus connection between the main and the secondary business control board and the business board. The method includes the following steps: (a) before each bus selection judgment, the business board judges message received by a backboard about whether relevant units of the main and the secondary control board business processing are ready and preserves the prior status after judgment; (b) in the bus selection judgment course, use the preserved prior status as the basis about whether the main and the secondary control board business processing relevant units received by the backboard bus are ready and the bus selection judgment. The invention can effectively improve the reliability of transmission equipment business board bus selection.

The invention relates to a connector having a contact member with a transient interruption prevention mechanism. The contact member of the connector (1) comprises a fixing part (12a) kept in a housing (10), and a first and a second elastic contacting part (12da, 12db) having at least two shunts and are connected to the fixing part (12a). The first elastic contacting part (12da) comprises a contacting part (12da1) which protrudes from an installing hole (15), applies force and is connected to the electrode (21) of an installed opposite side connection body (2), and a substrate force application part (12da1) which applies force to a substrate (3) through the displacement of the contacting part of the installed opposite side connection body (2). In the second elastic contacting part (12db), the contacting part (12da1) protrudes from the installing hole (15), applies force and is connected to the electrode (21) of the installed opposite side connection body (2). Even if the contacting part (12db1) with the force being applied by the installed opposite side connection body (2) conducts displacement, the front end is a free end.

A button cell terminal (10) electrically connecting a button cell (2) and a circuit board (1) is provided with spring contact terminal portions (11), board bonding portions (12), and a pressure-absorbing spring portion (13). The spring contact terminal portions are formed in a spring shape deforming elastically in response to pressure in the X-axis direction and the Z-axis direction from the button cell. The board bonding portions are bonded to the circuit board. The pressure-absorbing spring portion is provided with a bending arm portion (14) for absorbing pressure from the button cell by elastic deformation in response to pressure in the X-axis direction and the Y-axis direction from the button cell.

The invention discloses an anti-vibration connector and a connector assembly, and the anti-vibration connector comprises a connecting piece, an electric contact assembly, and a meshing piece. The connecting piece is hollow and is divided into a threaded section and a clamping section in the axial direction of the connecting piece. The electric contact assembly is arranged in the connecting piece in a penetrating mode, a first annular protrusion is arranged on the periphery, located in the clamping section, of the electric contact assembly, and the first annular protrusion is provided with a first meshing face back to the threaded section. The meshing piece is arranged on the periphery of the electric contact assembly in a sleeving mode and can move in the axial direction of the electric contact assembly. The meshing piece is further clamped to the inner circumference of the clamping section so as to limit relative rotation of the meshing piece and the connecting piece. The meshing piece and the connecting piece are rotatable together along an outer periphery of the electrical contact assembly. The meshing piece is further provided with a second meshing face facing the first meshing face, and the first meshing face and the second meshing face are each provided with a concave-convex structure and are meshed with each other. The shockproof connector can solve the technical problem that the threaded connection of the existing connector is easy to loosen in a continuous vibration working state.