Abstract: A method for improving digestion performance for proteins in food, and a protein composition and food containing same. According to the method, the content of ?-lactalbumin in food is controlled to be 10.5% to 51.0%, and the content of ?-casein is controlled to be 10.0% to 40.0%. Said contents are calculated on the basis that the total protein content in the food is 100%.

Abstract: A signal isolation apparatus is disclosed that includes: a metal oxide semiconductor (MOS) device formed on a P-type substrate. The MOS device includes: an N well; an N-type substrate contact formed in the N well and connected to supply voltage; a P-type substrate contact formed on the P-type substrate and connected to grounding voltage; and an isolation ring at least partially surrounding the N well, where a doping density of an ion implanted into the isolation ring is lower than a doping density of an ion implanted into the N well or a doping density of an ion implanted into the P-type substrate. The N well is surrounded by the isolation ring, and a density of the isolation ring is lower than a density of the N well or a density of the P-type substrate.

Abstract: A secondary control device and a charging system are provided. The secondary control device is connected with a transformer having a secondary winding connected with a charging interface, and includes: a secondary rectifier switch connected with the secondary winding; a secondary synchronous rectifier chip connected with the secondary winding and the secondary rectifier switch, and configured to detect a voltage between two terminals of the secondary rectifier switch, to control the secondary rectifier switch to turn on or turn off according to the voltage, to control the secondary rectifier switch to turn on again when the secondary rectifier switch is in an off-state so as to control the secondary winding to generate a mutation voltage, to obtain a transmission signal on the charging interface, and to control a driving voltage of the secondary rectifier switch according to the transmission signal so as to adjust the mutation voltage.

Abstract: An integrated circuit controls a switch power supply including: a primary feedback terminal, a primary feedback sampling module, an error amplifying module, a first control module, a secondary control module, a secondary feedback terminal, a second control module, and a driving module; the second control module, connected with the first control module and the secondary control module, respectively, and configured to generate a logic control signal according to the constant voltage control signal, or according to the secondary control signal and the constant voltage control signal; and the driving module, connected with the second control module and configured to generate a driving signal according to the logic control signal and to output the driving signal.

Abstract: A switching power source, a method and a control chip for controlling the same are provided. The switching power source includes: a filtering and rectifying module, connected with an AC power source and configured to filter and rectify an alternating current outputted from the AC power source to obtain a direct current; a control module, connected with the filtering and rectifying module and configured to obtain an amplitude of the alternating current from the direct current, to adjust a frequency of a control signal according to the amplitude, in which the control module decreases the frequency of the control signal continuously or intermittently when the amplitude increases, and to output the control signal; and a primary constant current circuit, connected with the control module and the filtering and rectifying module respectively, and configured to receive the control signal and to output a constant current according to the control signal.

Abstract: An integrated circuit controls a switch power supply including: a primary feedback terminal, a primary feedback sampling module, an error amplifying module, a first control module, a secondary control module, a secondary feedback terminal, a second control module, and a driving module; the second control module, connected with the first control module and the secondary control module, respectively, and configured to generate a logic control signal according to the constant voltage control signal, or according to the secondary control signal and the constant voltage control signal; and the driving module, connected with the second control module and configured to generate a driving signal according to the logic control signal and to output the driving signal.

Abstract: A switching power source, a method and a control chip for controlling the same are provided. The switching power source includes: a filtering and rectifying module, connected with an AC power source and configured to filter and rectify an alternating current outputted from the AC power source to obtain a direct current; a control module, connected with the filtering and rectifying module and configured to obtain an amplitude of the alternating current from the direct current, to adjust a frequency of a control signal according to the amplitude, in which the control module decreases the frequency of the control signal continuously or intermittently when the amplitude increases, and to output the control signal, and a primary constant current circuit, connected with the control module and the filtering and rectifying module respectively, and configured to receive the control signal and to output a constant current according to the control signal.

Abstract: A controlling circuit is provided for controlling an output voltage of a main circuit of a switched-mode power supply. The controlling circuit includes components that generate a switching status selecting signal reflecting a voltage change of the main circuit, and output a reference voltage according to a voltage output status selected according to the switching status selecting signal. Other components output a pulse width modulation controlling signal according to the reference voltage and a current signal reflecting a current change of the main circuit, and output a pulse frequency modulation controlling signal with a frequency according to a frequency output status selected according to the switching status selecting signal. Yet other components output a switching controlling signal according to the controlling signals, and control a switch of the main circuit to switch-on or switch off according to the switching controlling signal to stabilize the output voltage of the main circuit.

Abstract: A controlling circuit is provided for controlling an output voltage of a main circuit of a switched-mode power supply. The controlling circuit includes components that generate a switching status selecting signal reflecting a voltage change of the main circuit, and output a reference voltage according to a voltage output status selected according to the switching status selecting signal. Other components output a pulse width modulation controlling signal according to the reference voltage and a current signal reflecting a current change of the main circuit, and output a pulse frequency modulation controlling signal with a frequency according to a frequency output status selected according to the switching status selecting signal. Yet other components output a switching controlling signal according to the controlling signals, and control a switch of the main circuit to switch-on or switch off according to the switching controlling signal to stabilize the output voltage of the main circuit.