Constant current driving device

摘要

A constant current driving device includes an electronic device, a transistor, a rectifying circuit, a current limiting element, an impedance element, and a first and a second energy storage element. A first end of the electronic device is connected to a first end of a load element. A first end of the transistor is connected to a second end of the load element, a second end of the transistor is connected to a second end of the electronic device through an impedance element, and a control end of the transistor is connected to the second end of the electronic device through a first energy storage element. The rectifying circuit connected between the first end and the control end of the transistor. The current limiting element is connected in parallel with the rectifying circuit. The second energy storage element is connected between the first and second end of the electronic device.

主权项

1. A constant current driving device for driving a load element, the constant current driving device comprising:
an electronic device having a first end and a second end, wherein the first end of the electronic device is electrically connected to a first end of the load element; a transistor having a first end, a second end, and a control end, wherein the first end of the transistor is electrically connected to a second end of the load element, the second end of the transistor is electrically connected to the second end of the electronic device through an impedance element, and the control end of the transistor is electrically connected to the second end of the electronic device through a first energy storage element; a rectifying circuit electrically connected between the first end and the control end of the transistor; a current limiting element connected in parallel with the rectifying circuit; and a second energy storage element electrically connected between the first end and the second end of the electronic device.