If you have a load with a variable or poorly specified resistance and want to regulate the power applied to it (a heater for example), merely controlling the voltage or current will not work, as in both cases the power P = I2R = V2/R depends on R...

Vishay Intertechnology introduced the industry’s first AEC-Q100 qualified rectangular ambient light sensor....

The LM4041 has been around for over 20 years. During those decades, while primarily marketed as a precision adjustable shunt regulator, this classic device also found its way into alternative applications...

The ever innovative and prolific Mr. Woodward has offered “PWM-programmed LM317 constant current source”, an intriguing programmable constant current source which elicited a lively conversation in its comments section...

Almost every wall power supply has no indicator showing whether current is consumed by the load or not. It seems that this was a shortcoming that was not only noticed by me...

Figure gives a simple circuit for the PUSH ON, PUSH OFF function with only a few inexpensive components...

Figure’s negative constant current source has been a textbook application for the LM337 regulator forever...

When probing digital logic levels on a circuit board, locating the indicator of the logic level near the probe tip is convenient, so that you can keep both the indicator and probe tip constantly in sight...

Of the many types of analog filters available to designers, few allow easy adjustments of the filter parameters. The biquadratic, or biquad, filter is an exception, however...

LM317 fans will recognize Figure as the traditional LM317 constant current source topology...