Discharge device and testing machine

Abstract

This invention proposes a discharge device comprising a floating active load and a resistor network. The resistor network is electrically connected to the floating active load.

Claims

1. A discharge device comprising: a floating active load; and a resistor network electrically connected to the floating active load; wherein the floating active load comprises: a bridge rectifier line electrically connected to the resistor network; and an active load electrically connected to the bridge rectifier line.

2. The discharge device as claimed in claim 1, wherein the bridge rectifier circuit comprises: a first diode, a cathode of the first diode electrically connected to one end of the active load; a second diode, a cathode of the second diode electrically connected to the same end of the active load, and an anode of the second diode electrically connected to the resistor network; a third diode, a cathode of the third diode electrically connected to an anode of the first diode, and an anode of the third diode electrically connected to the other end of the active load; and a fourth diode, a cathode of the fourth diode electrically connected to the anode of the second diode, and an anode of the fourth diode electrically connected to the other end of the active load.

3. The discharge device as claimed in claim 2, wherein the active load comprises: a current source, one end of which is electrically connected to the cathode of the first diode and the cathode of the second diode; and a resistive element, one end of which is electrically connected to the other end of the current source, and the other end of which is electrically connected to the anode of the third diode and the anode of the fourth diode.

4. The discharge device as claimed in claim 1 further comprises: a first switching circuit, one end of which is electrically connected to one end of the floating active load, the other end of which is electrically connected to one end of the resistor network, and the other end of the resistor network is electrically connected to the other end of the floating active load.

5. The discharge device as claimed in claim 4, wherein the resistor network includes a plurality of resistors, the first switching circuit includes a plurality of switches electrically connected to the plurality of resistors respectively, the plurality of resistors being connected in parallel with each other, and the on / off state of the plurality of switches of the first switching circuit determining a parallel resistance value of the resistor network.

6. The discharge device as claimed in claim 5 further comprises: a second switching circuit electrically connected to one end of the first switching circuit and a device under test (DUT) connection end; a third switching circuit electrically connected to the other end of the resistor network and another DUT connection end; and a voltage measuring circuit, the two ends of the voltage measuring circuit being electrically connected to the second switching circuit and the third switching circuit respectively, wherein the on / off state of the plurality of switches of the first switching circuit is based on the voltage value between the DUT connection end and the other DUT connection end measured by the voltage measuring circuit.

7. A testing machine, comprising: a measurement unit for measuring a voltage value of a test object; a discharge unit electrically connected to the test object; and a control unit electrically connected to the measurement unit and the discharge unit, the discharge unit comprising a floating active load and a resistor network electrically connected to the floating active load; wherein the floating active load comprises: a bridge rectifier circuit electrically connected to the resistor network; and an active load electrically connected to the bridge rectifier circuit.

8. The testing machine as described in claim 7, wherein the resistor network includes a plurality of resistors, the control unit is electrically connected to the plurality of resistors through a plurality of switches, and the control unit controls the opening and closing states of the plurality of switches based on the voltage value of the object under test, thereby adjusting a parallel resistance value of the resistor network.

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