Abstract:
A waterproof piezoelectric ceramic speaker comprises a ceramic composite and a vibration membrane. The ceramic composite includes a ceramic plate and a driving electrode assembly arranged on the ceramic plate and supplying a driving voltage to the ceramic plate to generate vibration for the ceramic plate. The vibration membrane includes a first vibration layer and a second vibration layer respectively adhered to two opposite surfaces of the ceramic composite. The first vibration layer and the second vibration layer respectively have a resonance member adhered to the ceramic plate and resonating with the ceramic plate synchronously, a waterproof member connecting with the resonance member to seal the driving electrode assembly, and a bonding member extending from a perimeter of the resonance member to seal the resonance member.
Abstract:
A power supply system providing backup power comprises at least one power supply, at least one power storage unit and a power integration panel. The power supply converts an input power into a conversion power and sends at the same time a power good signal to a motherboard. The power storage unit receives the conversion power in normal conditions and saves electric energy to generate a backup power. The power integration panel includes a power control unit connected to the power supply to determine whether the conversion power is output through the power good signal, a backup control unit connected to the power storage unit to compare the conversion power and backup power to determine whether the backup power is output, and a power regulation unit connected to the power control unit and backup control unit to regulate the conversion power or backup power to be an output power.
Abstract:
A method to avoid over-rebooting of a power supply device comprises Step 1: receiving a power-good signal generated by a power supply device working normally; Step 2: checking whether the power-good signal is received; if no, demanding the power supply device to reboot; and Step 3: recording a count of rebootings of the power supply device; after the power supply device reboots, checking again whether the power-good signal is received; if yes, letting the power supply device keep on working and resetting the count of rebootings; if no, demanding the power supply device to reboot again, accumulating the count of rebootings, and checking whether the count of rebootings is greater than a limited count of rebootings; if yes, forbidding the power supply device to reboot. Thus is solved the problem that a power supply device whose abnormality cannot be removed by rebooting may damage the information device.
Abstract:
A modular redundant power supply includes a casing, a power integration panel, a plurality of power supply modules and a power regulation module. The casing has an installation space defined into a first installation zone and a second installation zone. The power integration panel is located in the installation space. The power supply modules are installed on the first installation zone and connected to the power integration panel. Each power supply module outputs a duty power to the power integration panel after being started. The power regulation module gets the duty power from the power integration panel and regulates thereof to generate an auxiliary duty power output to the power integration panel so that the power integration panel can supply the duty power and the auxiliary duty power to an external device.
Abstract:
A multi-command trigger switch includes a rotary switch, a rotary casing and a trigger element. The rotary switch includes a base and a rotary disc coupled with the base and movable on a swivel locus against the base. The base and the rotary disc are interposed by a housing space to hold a rotary trigger assembly and a depressing trigger assembly. The rotary trigger assembly outputs a first trigger signal while moving on the swivel locus. The depressing trigger assembly outputs a second trigger signal while moving on a vertical locus. The rotary casing and the rotary switch define a movement space therebetween to hold the trigger element. The base and the depressing trigger assembly confine movement of the depressing trigger assembly through a positioning notch and a confining rib. The depressing trigger assembly and the trigger element include confine the trigger element from rotating against the rotary casing.
Abstract:
A multi-instruction switch for increasing electrical insulation includes a housing, a common pin and a switching pin set. The housing has an accommodating space, a conductive elastic plate disposed in the accommodating space, and a support rack disposed in the accommodating space and comprising a limiting track. The switching pin set, penetrating through the housing to extend into the accommodating space, comprises a first pin and a second pin disposed on the support rack. The first pin comprises a contact section located in the limiting track: The second pin comprises a trigger section located in the limiting track. The limiting track has an insulation space between the trigger section and the contact section. Thus, carbon residue generated during a switching process of the multi-instruction switch is not accumulated between the contact section and the trigger section due to the insulation space.
Abstract:
A power supply avoiding over-discharge of battery modules includes a main power supply system and a redundant power supply system. The invention uses a battery protection module to detect the status of a battery module in the redundant power supply system in normal conditions. The battery protection module includes an activation path connected to the main power supply system to receive standby power, a battery detection path connected to the battery module to receive a micro current and generate a protection activation signal when the battery module is in a charge-waiting state, and a protection activation path connected to a switch unit in the redundant power supply system to receive the protection activation signal to make the switch unit enter an OFF state.
Abstract:
A locally illuminated keycap is located in a keyboard. The keyboard includes a lighting unit to project light to the keycap. The keycap includes at least one top edge to form an opaque press surface, at least one bottom edge located below the press surface to form a light incident surface to receive light, and at least one transparent light emitting surface connecting to the top edge and bottom edge to emit light. The press surface and light emitting surface form an inclined angle between them greater than 90 degrees. The press surface, light incident surface and light emitting surface jointly form a light retaining zone. Light generated by the lighting unit projects to the light incident surface and enters the light retaining zone, and is masked by the opaque press surface to emit locally through the transparent light emitting surface.
Abstract:
An illuminated keycap for generating soft light is located in a keyboard which includes a command circuit board located beneath the keycap and a lighting unit to project light to the keycap. The keycap includes a press surface, a connecting section extended from the press surface towards the command circuit board and a color display surface extended from the connecting section and parallel to the press surface. The press surface, connecting section and color display surface form a light retaining zone. The press surface has a top surface coated with a first pigment layer. The color display surface has a bottom surface coated with a second pigment layer whose color is different from the first pigment layer. The first and second pigment layers form a mixed color so that light generated by the lighting unit to enter the light retaining zone is emitted softly through the connecting section.
Abstract:
A transformer comprises a circuit board, an iron core, a winding set and a plurality of magnetic conduction elements. The circuit board has a plurality of electric conduction holes connected via at least one power connection wire. The iron core is located on the circuit board and has a first winding section and a second winding section. The winding set is wound on the first winding section. Each magnetic conduction element has a connecting section located on the iron core and an input section and an output section inserted into the electric conduction holes. The output section of one magnetic conduction element is connected to the input section of another magnetic conduction element through the power connection wire, thereby the magnetic conduction elements and power connection wire form a magnetic conduction winding set which generates magnetic coupling with the winding set through the iron core.