Abstract: Herein disclosed is a voltage isolation circuit coupled to power supplies. The voltage isolation circuit comprises a series switch group controlled by a first control signal, a parallel switch group controlled by a second control signal, and a first high impedance element. The series switch group comprises a transistor arranged in a first current loop and having two channels connected to one of the power supplies respectively. The first high impedance element, coupled to the transistor in parallel, has a measurement terminal and two ends, connected to one of the power supplies respectively. When the series switch group is conducted, the power supplies are coupled in series in the first current loop. When the parallel switch group is conducted, the power supplies are coupled in parallel in a second current loop. Impedance values measured from the measurement terminal to each end of the first high impedance element are identical.

Abstract: Herein disclosed is a voltage isolation circuit coupled to power supplies. The voltage isolation circuit comprises a series switch group controlled by a first control signal, a parallel switch group controlled by a second control signal, and a first high impedance element. The series switch group comprises a transistor arranged in a first current loop and having two channels connected to one of the power supplies respectively. The first high impedance element, coupled to the transistor in parallel, has a measurement terminal and two ends, connected to one of the power supplies respectively. When the series switch group is conducted, the power supplies are coupled in series in the first current loop. When the parallel switch group is conducted, the power supplies are coupled in parallel in a second current loop. Impedance values measured from the measurement terminal to each end of the first high impedance element are identical.

Abstract: An electrical connecting device is provided. The electrical connecting device comprises at least one jig for electrically connecting and clamping at least one electrode of at least one electrical component. The jig comprises a first clamping portion, a second clamping portion and a first detecting elastic sheet. The second clamping portion is disposed opposite to the first clamping portion. The electrode is adapted to be electrically connected to and clamped between the first clamping portion and the second clamping portion. The first detecting elastic sheet is fixed with the first clamping portion. The first detecting elastic sheet is connected to a first sensor and formed with a first contact portion. The first sensor is used for sensing a first parameter of the electrical component and the first contact portion is used for contacting the electrode.