A high voltage power supply apparatus includes: a comparator, a transformer, a rectifier, and a detector. The comparator is to control output of a basic voltage. A high voltage based on the basic voltage is used to perform an image forming job in an image forming apparatus. The transformer is to output an alternating current voltage of a second side of the transformer by amplifying an alternating current voltage of a first side of the transformer, the amplifying being based on a resonance phenomenon induced from the basic voltage. The rectifier is to output the high voltage by rectifying the alternating current voltage of the second side. The detector is to sense a voltage applied to the comparator and a voltage applied to the transformer, and is to output operational state information of the high voltage power supply apparatus based on the sensed voltages.

A high voltage power supply apparatus includes: a comparator, a transformer, a rectifier, and a detector. The comparator is to control output of a basic voltage. A high voltage based on the basic voltage is used to perform an image forming job in an image forming apparatus. The transformer is to output an alternating current voltage of a second side of the transformer by amplifying an alternating current voltage of a first side of the transformer, the amplifying being based on a resonance phenomenon induced from the basic voltage. The rectifier is to output the high voltage by rectifying the alternating current voltage of the second side. The detector is to sense a voltage applied to the comparator and a voltage applied to the transformer, and is to output operational state information of the high voltage power supply apparatus based on the sensed voltages.

Methods, systems, and computer programs encoded on computer storage medium, for identifying, for a power source, a lookup table (LUT) that includes, for each condition of the power source, i) a maximum power (p-max) of the power source for the condition and ii) a sustained power (p-sus) of the power source for the condition; examining the LUT to define calibration triggers associated with the conditions; identifying an event that satisfies a particular calibration trigger of the calibration triggers; in response to identifying the event, creating a workload for the power source; in response to the workload, determining for a particular condition associated with the particular calibration trigger, an updated p-max value for the particular condition and an updated p-sus value of the power source for the particular condition; and updating the LUT, for the particular condition, based on the updated p-max value and the updated p-sus value.

Embodiments described herein are directed to an integrated circuit (IC) for obtaining elevated credentials and performing actions with respect to a network-based resource in accordance with the elevated credentials. For instance, a user may request his privileges with respect to the resource to be elevated. Responsive to submitting the request, the client device's main CPU may send a request to a specialized IC included in the client device. The specialized IC performs various forms of validation responsive to the request. If validation is successful, the specialized IC sends a request for elevated privileges to a network-based service, which determines whether the user is authorized to do so. Upon a successful determination, the service provides a response granting the elevated credentials. The specialized integrated circuit is then given access to a private key that the IC utilizes to digitally sign an action request to perform the desired action.

Embodiments described herein are directed to an integrated circuit (IC) for obtaining elevated credentials and performing actions with respect to a network-based resource in accordance with the elevated credentials. For instance, a user may request his privileges with respect to the resource to be elevated. Responsive to submitting the request, the client device's main CPU may send a request to a specialized IC included in the client device. The specialized IC performs various forms of validation responsive to the request. If validation is successful, the specialized IC sends a request for elevated privileges to a network-based service, which determines whether the user is authorized to do so. Upon a successful determination, the service provides a response granting the elevated credentials. The specialized integrated circuit is then given access to a private key that the IC utilizes to digitally sign an action request to perform the desired action.

A control circuit of a secondary battery with a novel structure is provided. The control circuit of a secondary battery includes a first transistor, a first voltage generation circuit generating a first voltage, and a second voltage generation circuit generating a second voltage. The first voltage generation circuit includes a second transistor and a first capacitor. The second voltage generation circuit includes a third transistor and a second capacitor. The difference between the first voltage and the second voltage is set in accordance with the threshold voltage of the first transistor. When the first transistor includes a back gate, a voltage retention circuit having a function of retaining the voltage of the back gate is included. The voltage retention circuit includes a fourth transistor and a third capacitor. The third capacitor includes a ferroelectric layer between a pair of electrodes. The third capacitor retains a voltage applied to the back gate by being applied with a voltage for polarization inversion in the ferroelectric layer.

A sensing electronic device includes a substrate, and a reference voltage control unit. The sensing array is arranged on the substrate, and includes a first sensing electrode and a second sensing electrode. The reference voltage control unit is electrically connected to the sensing array. In an operation period, the reference voltage control unit has a first voltage, the first sensing electrode has a second voltage, and the second sensing electrode has a third voltage, wherein a difference between the first voltage and the second voltage is different from a difference between the first voltage and the third voltage.

A sensing electronic device includes a substrate, and a reference voltage control unit. The sensing array is arranged on the substrate, and includes a first sensing electrode and a second sensing electrode. The reference voltage control unit is electrically connected to the sensing array. In an operation period, the reference voltage control unit has a first voltage, the first sensing electrode has a second voltage, and the second sensing electrode has a third voltage, wherein a difference between the first voltage and the second voltage is different from a difference between the first voltage and the third voltage.

A high voltage power supply apparatus includes: a comparator, a transformer, a rectifier, and a detector. The comparator is to control output of a basic voltage. A high voltage based on the basic voltage is used to perform an image forming job in an image forming apparatus. The transformer is to output an alternating current voltage of a second side of the transformer by amplifying an alternating current voltage of a first side of the transformer, the amplifying being based on a resonance phenomenon induced from the basic voltage. The rectifier is to output the high voltage by rectifying the alternating current voltage of the second side. The detector is to sense a voltage applied to the comparator and a voltage applied to the transformer, and is to output operational state information of the high voltage power supply apparatus based on the sensed voltages.

A high voltage power supply apparatus includes: a comparator, a transformer, a rectifier, and a detector. The comparator is to control output of a basic voltage. A high voltage based on the basic voltage is used to perform an image forming job in an image forming apparatus. The transformer is to output an alternating current voltage of a second side of the transformer by amplifying an alternating current voltage of a first side of the transformer, the amplifying being based on a resonance phenomenon induced from the basic voltage. The rectifier is to output the high voltage by rectifying the alternating current voltage of the second side. The detector is to sense a voltage applied to the comparator and a voltage applied to the transformer, and is to output operational state information of the high voltage power supply apparatus based on the sensed voltages.