Electronic Design

Enhanced VLED Driver Updates JFET Constant-Current Source

Download this article in PDF format. High-brightness visible-light LEDs (VLEDs) require a constant-current source. This simple, RFI-free circuit takes advantage of the normally-on properties of the ...
EDN

JFET cascode boosts current-source performance

Many process-control sensors, such as thermistors and strain-gauge bridges, require accurate bias currents. By adding a single current-setting resistor, R 1, you can configure voltage-reference ...
Hackaday

Biasing Transistors With Current Sources

Over on his YouTube channel [Aaron Danner] explains biasing transistors with current sources in the 29th video of his Transistors Series. In this video, he shows how to replace a bias resistor (and ...
Hackaday

Biasing That Transistor Part 4: Don’t Forget The FET

Over the recent weeks here at Hackaday, we’ve been taking a look at the humble transistor. In a series whose impetus came from a friend musing upon his students arriving with highly developed ...
EDN

Characteristics of Junction Field Effect Transistors (JFET)

The Junction Field Effect Transistors (JFET) has a channel consisting of N-type semiconductor or P-type semiconductor material and the gate is made of the opposite semiconductor type. The junction FET ...
New Electronics

Industry’s first transistor arrays with DMOS FET source-output driver

Toshiba has launched the TBD62783A series of highly efficient transistor arrays, said to be the industry’s first with a DMOS FET type source-output driver. This series succeeds the TD62783 series of ...
Electronic Design

Enhanced VLED Driver Updates JFET Constant-Current Source (.PDF Download)

High-brightness visible-light LEDs (VLEDs) require a constant-current source. This simple, RFI-free circuit takes advantage of the normally-on properties of the new, high-power depletion-mode (Dmode) ...