Chicony Power Technology Co., Ltd.

Fu-Sung Chen

Sen-Chi Lin

Ming-Ho Huang

Yang Wang

Chi-Chun Chen

Yu-Hao Tung

A low-power-consumption protection circuit includes a load detection module, a secondary feedback control module, and a primary control module. The load detection module is coupled to a current detection unit. The secondary feedback control module is coupled to the load detection module and an isolation unit. The primary control module is coupled to the isolation unit and an isolation switch. When the load detection module detects that the current detection unit outputs a voltage level, the secondary feedback control module transmits a protection signal to the primary control module through the isolation unit.

Low-power-consumption protection circuit

A variable switching frequency power supply apparatus includes a main transformer, a voltage detection unit, a pulse width modulation control unit and a switch unit. The voltage detection unit is electrically connected to the main transformer. The pulse width modulation control unit is electrically connected to the voltage detection unit. The switch unit is electrically connected to the pulse width modulation control unit and the main transformer. The main transformer transforms an input voltage into an output voltage according to a switching frequency of the switch unit. The voltage detection unit detects the input voltage and then informs the pulse width modulation control unit. The pulse width modulation control unit is configured to control the switching frequency of the switch unit according to a voltage absolute value of the input voltage.

Variable switching frequency power supply apparatus

The present invention discloses a power converter with extremely low standby power consumption for converting an input AC power to an output DC power, comprising: a DC supply voltage generating unit, used for generating a DC supply voltage; a pulse width modulation controller, used for generating a pulse width modulation signal according to a feedback voltage of the output DC power; and an isolated actuating switch, placed between the DC supply voltage generating unit and the pulse width modulation controller, for controlling the supply of the DC supply voltage to the pulse width modulation controller, according to a switch signal from a loading device.

Power converter

A power-saving power supply apparatus with battery module converts an inputted AC power into an outputted DC power and includes: a Triac switch electrically connected to the inputted AC power; a Triac driver electrically connected to the Triac switch; a power microprocessor electrically connected to the Triac driver; and a battery module electrically connected to the power microprocessor. When the apparatus is idle or in low workload, the power microprocessor sends a switch signal to the Triac driver to turn off the Triac switch and thus shut off the inputted AC power. Thus, the apparatus is standby with relatively low consumption of electricity. At this time, the battery module provides power to the power microprocessor.

Power-saving power supply apparatus with battery module

A power auto-detection apparatus is applied to a power supply of a personal computer or applied to an adapter of a notebook computer. The power auto-detection apparatus has a voltage stabilizing unit, an over-current protective unit, a voltage regulating unit, a signal processing unit, and a regulating resistor. The over-current protective unit provides an over-current protection for the power auto-detection apparatus. The voltage regulating unit electrically connects to a non-ground terminal of the regulating resistor and outputs a first regulating voltage and a second regulating voltage. The signal processing unit electrically connects the voltage regulating unit and receives the second regulating voltage to output a power detection signal to the computer system to automatically detect the output power of the power supply or the adapter.

Power auto-detection apparatus

The present invention discloses a power converter with low standby power consumption, used to convert an AC input power to an output DC power, comprising: an EMI filter, coupled to the AC input power to filter the EMI; a TRIAC, coupled to the EMI filter to access the AC input power; and a TRIAC driver, used for driving the gate of the TRIAC switch according to an on-off control signal from a loading device, to control the conduction of the TRIAC switch.

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Taipei Hsien, Taiwan

Fu-Sung Chen