543results about How to "Current consumption" patented technology

System and method for regulating a power conversion system. For example, a system controller includes a signal generator and one or more power-consumption components. The signal generator is configured to receive a feedback signal related to an output signal of the power conversion system, a current sensing signal and an input voltage, and to generate a control signal based on at least information associated with the feedback signal, the current sensing signal and the input voltage. The power-consumption components are configured to receive the control signal. The signal generator is further configured to determine whether the feedback signal is smaller than a feedback threshold for a first predetermined period of time, the current sensing signal is smaller than a current sensing threshold for a second predetermined period of time, and the input voltage is smaller than a first threshold for a third predetermined period of time in magnitude.

In a resistance value variable memory, substrate voltages and / or substrate biases of a digit line drive circuit, a word line drive circuit and a bit line drive circuit for a memory cell array are changed in accordance with an operation mode. A driving power on signal lines connected to memory cells can be increased, and a leakage current during standby can be reduced without increasing a circuit layout area.

In a hearing aid device and operating method with automatic switching of the hearing aid voltage supply for an external component connected to an audio input of he hearing aid via a single audio voltage supply contact. A load detection device measures the electrical load at the audio input and switches either the unregulated voltage of the hearing aid battery or the regulated voltage of a voltage regulator in a preamplifier of the hearing aid to the audio input dependent on the measured load.

In a ring oscillator constituting an oscillating circuit, resistor circuits are used as delay circuits to be connected to respective inverters. That is, the inverters and the resistors are connected in series so that the resistor is provided between the adjacent inverters. With the arrangement, it is possible to provide an oscillating circuit which is less dependent on any of power supply voltages, temperatures, and manufacturing variations, while maintaining a characteristic in which the oscillating frequency decreases as an output voltage of a booster circuit increases.

A metallic oxide semiconductor device with high performance and small variations. It is a field effect transistor using a metallic oxide film for the channel, which includes a channel region and a source region and comprises a drain region with a lower oxygen content than the channel region in the metallic oxide, in which the channel region exhibits semiconductor characteristics and the oxygen content decreases with depth below the surface.

A printed circuit board motor is disclosed. The motor comprises a rotor plate embedded with magnets, an axle, and a printed circuit board stator. The printed circuit board comprises two conductors printed on the same surface or on opposite surfaces of the printed circuit board The two conductors produce alternating “square wave” patterns. The printed circuit board circuitry causes the direction of the current flow to reverse at intervals. The rotor rotates in response to the current flow in the stator. The rotation rate can be accurately controlled. The torque and average current consumption can be controlled by “chopping” the current with high frequency modulation whose duty cycle is proportional to the torque and average current consumption which will prolong the battery life of the motor.

Flattening total current consumption of system having processing core and power supply input by current sensing within system at power supply input and controlling system current consumption such that system current is reduced if over reference current threshold, and increased if below reference current threshold. Inject additional current through digital injections cells working higher frequencies, by increasing switching activity, by increasing voltage supply to core, and by increasing operating frequency of processor core. Feedback signal indicates current consumption of system. Current consumption similarly decreased. Current sensed by mirroring input current inline with power supply input and compensating for voltage drop introduced by mirroring using opposing field effect transistors and maintaining outputs at same voltage through feedback control loop. Processor core may be general purpose processor core or cryptographic processor core. System may be system-on-chip or system-on-package. System includes processor core and current flattening device based on method. Also, current flattening device and current sensor. On chip current sensor sensing current draw of processor core.

An automatic portable ambulant miniaturized system for applying pneumatic pressure to a body limb including a portable ambulant hand-held fluid source unit, a conduit for delivering fluid generated by the unit, and a sleeve coupled to the conduit and adapted to envelop a body limb. The sleeve contains one or more individually inflatable cells, each cell being subdivided into two or more longitudinally extending confluent compartments along the axis of the body limb. The compartments are inflated and deflated essentially simultaneously by the portable fluid source unit.

Consumption current is reduced for a voltage regulator in sleep mode. In normal operation mode, a sub-regulator circuit is ceased from operating according to a power-down signal, which allows an operation amplifier to compare between a reference voltage outputted from a reference voltage circuit and a monitor voltage generated by a voltage-dividing circuit. Based on a detection voltage as a comparison result, a PMOS is controlled to regulate an internal power voltage such that the monitor voltage becomes equal to the reference voltage. In sleep mode, the reference voltage circuit and operational amplifier is ceased from operating, to start up the sub-regulator circuit. A slight current, restricted by a resistance, flows through a PMOS of the sub-regulator circuit. The same magnitude of current is supplied from the PMOS constituting a current mirror to a PMOS, etc. of a threshold-voltage output circuit. The threshold voltage, at a node between the PMOS constituting the current mirror and the PMOS of the threshold-voltage output circuit, is power-amplified by a voltage follower and outputted through an output terminal.

The clamp circuit clamps an input voltage at prescribed higher and lower clamp voltages which are stabilized under a temperature fluctuation. Transistors Q12 and Q14 are switched on in their linear region. In a lower voltage clamp circuit 18, an Vin detecting circuit 20 outputs Va1 by level-shifting Vin by Q13 and voltage-divides by series resistance circuit 23 the level-shifted Vin, while a reference voltage generating circuit 21 outputs Vr1 by level-shifting 0 V by Q15 and voltage-divides by series resistance circuit 25 the level-shifted voltage. Q11 is switched on, when a comparator 22 determines that Va1 descends and goes across Vr1. Here, Q12 is of the same characteristics as Q14, while Q13is of the same characteristics as Q15. Further, the resistance of the circuits 23 is the same as that of the circuit 25. The higher voltage clamp circuit 19 is similar to the circuit 18.

An electric device features a two-wire interface which two-wire interface serves to feed electric power to the electric device and also to transmit a signal, with the maximum power drawn via the two-wire interface in normal operation being restricted to a predefined upper limit. The permissible maximum power consumption of the electric device is automatically and temporarily increased beyond the predefined upper limit when the electric device is switched into a special operational function mode. The length of time in which the electric device is in the special operational function mode can thus be reduced.

A voltage supply control circuit is arranged between a true ground voltage and a pseudo ground line. In an active mode, first and second control signals are at the “H” and “L” levels, respectively. In response to this, a first switch is turned on so that a first node is electrically coupled to a power supply voltage, and attains the “H” level. Further, a second switch is turned on to couple electrically the ground voltage to a second node. In a standby mode, the first and second control signals are at the “L” and “H” levels, respectively. In response to this, a third switch is turned on to couple electrically the first and second nodes together. Since the power supply voltage was electrically coupled to the first node according to the turn-on of the first switch in the active mode, the path of the control signal including the first node to the switch has accumulated charged charges.

A tail-tank coupling technique combines two complementary differential LC-VCOs to form a quadrature LC-VCO. The technique reduces phase noise by providing additional energy storage for noise redistribution and by cancelling noise injected by transistors when they operate in the triode region. The resulting noise factor is close to the theoretical minimum 1+γ, similar to a differential LC-VCO driven by an ideal noiseless current source. However, its figure-of-merit is higher, due to the absence of voltage head-room being consumed by a current source. The optimal ratio of tail-tank capacitor to main-tank capacitor for minimizing phase noise is approximately 0.5. The method can be extended to combine any even number of LC tanks resonating at fo and 2fo to form an integrated oscillator producing quadrature phase at frequency fosc and differential output at 2fosc.