Delta Electronics, Inc.

Chia-Hao Yeh

Xin-Hung Lin

Yu-Chieh Tseng

Chien-Chung Lee

Likai Lin

Sheng-Kuo Lin

An abnormal-voltage protection apparatus includes a switch unit, a voltage detection unit, and a delay time control unit. The switch unit is coupled to a power supplying path formed between an AC power source and a load. The voltage detection unit detects the AC power source and provides a detection signal. The delay time control unit is coupled to the voltage detection unit and the switch unit, and receives the detection signal and provides a control signal to the switch unit according to the detection signal. When the voltage detection unit detects that the AC power source changes from an abnormal voltage to a normal voltage, the delay time control unit turns on the switch unit by the control signal after a delay time so that the AC power source supplies power to the load through the power supplying path.

Abnormal-voltage protection apparatus and method of operating the same

An input connection device for an electronic device is provided. The electronic device includes a mother circuit board and a cabinet having a first wall. The input connection device comprises an insulation housing, a conductive connection unit, a circuit board, a switch, a first power wire and a second power wire. The insulation housing is disposed on the first wall and comprises a main body comprising a hollow channel. The conductive connection unit is disposed in the hollow channel and is engaged with the insulation housing. The circuit board is connected with the conductive connection unit directly. The switch has an input part and an output part. The first power wire is connected with the circuit board and the input part of the switch. The second power wire is connected with the output part of the switch and the mother circuit board.

Input connection device

Inverter

An over-voltage protection apparatus includes an input voltage detection module () and a second switch (). The input voltage detection module () includes a switch assembly (), a rectifying circuit (), a voltage detection circuit (), and a voltage protection circuit (). The rectifying circuit () rectifies an AC power source (Vac) to generate a DC voltage (Vb). The voltage protection circuit () controls the second switch () to disconnect the AC power source (Vac) to supply a load () when the voltage detection circuit () detects that the DC voltage (Vb) reaches to a first over voltage value (Voth). The voltage protection circuit () controls the switch assembly (), thereby providing a voltage-limiting protection and a current-limiting protection when the voltage detection circuit () detects that the DC voltage (Vb) reaches to a second over voltage value (Voth).

Growing community of inventors

Taoyuan, Taiwan

Chia-Hao Yeh