An SCR topology transmogrifies into BJT two-wire precision current source with a self-resetting fault-current limiter.

The Design Idea in Figure 1 is a precision current mirror used to drive two strings of five white LEDs. To protect the LED string from overcurrent due to an open in one of the strings, you can add two ...

Last time we looked at Spice models of a current sink. We didn’t look at some of the problems involved with a simple sink, and for many practical applications, they are perfectly adequate. However, ...