By using dual bipolar devices in one case, the manufacturer nearly perfectly matches the two devices. Although this Design Idea describes a positive power supply, you can realize a similar ...

He builds a transistor-based constant current driver, then adds voltage regulation for the circuit as seen in the schematic on the left.

And nothing more, a CCS can be created using a handful of discrete components, as well as using some dedicated integrated circuits, and can be effectively used in a tube audio circuit. In practice, ...

2. A better approach is to use a FET as a constant-current source. The IXTP3N50D2 Dmode FET from IXYS Corp. powers a 5-W white VLED such as the LZI-00NW05 from LEDengin (190 lumens at 1 A); the ...

The normal constant current circuit, one with the same transistor in the reversed-collector-emitter configuration, and then the right one with the first circuit completely reverse-biased. The 500Ω ...

He builds a transistor-based constant current driver, ... Your 10W LED will need about 10.5V and your constant current circuit will have to drop the difference from the supply voltage.

Response of Chemical Field-Effect Transistor (CHEMFET) electrochemical sensors are taken from the output of a readout interface circuit that maintains constant drain-source voltage and current levels.

First Transistor Using Nanotechnology Is 50 Times More Energy Efficient Than Current Models. ScienceDaily . Retrieved June 4, 2025 from www.sciencedaily.com / releases / 2008 / 04 / 080424212327.htm ...

The LM334 is not only an adjustable current source, but it is also a rectifier. Right on the front page of the TI data sheet are the words: “Reverse applied voltages of up to 20V will draw only a few ...