Articles and news - 2

nice simple reasonably accurate PWM-driven 16-bit
A nice, simple, and reasonably accurate PWM-driven 16-bit DAC
Aug 14, 2025 Circuits

Implementing a simple digital-to-analog converter by cascading a single pulse width modulator and an analog low-pass filter is nothing new. Nor is applying to a filter the sum of the outputs...

practical design guide lightning detectors
A practical design guide for lightning detectors
Aug 13, 2025 Articles

Lightning is one of nature’s most intense and unpredictable forces, but thankfully, we have got technology to help us stay ahead of the storm...

Cross connect complementary current sources reduce
Cross connect complementary current sources to reduce self-heating error
Aug 12, 2025 Circuits

Lively discussions have sprung up here in editor Aalyia Shaukat’s Design Ideas regarding the limitations and quirks of, and design tricks for, the current control  topologies...

Independent control thyristor half-wave firing angles
Independent control of thyristor half-wave firing angles via PWM
Aug 11, 2025 Circuits

“Two halves make a whole” is a very old and often true maxim. For example, it’s almost always true when said about AC phase angle power control...

Triac relay combination
Triac and relay combination
Aug 10, 2025 Circuits

The ability to zero-cross when turning on AC line voltage to some loads may be advantageous...

Circuit optimizes phototransistor bandwidth
Circuit optimizes phototransistor bandwidth
Aug 6, 2025 Circuits

A simple circuit can improve the dynamic performance of a phototransistor for use in low- to medium-speed applications as fast as 100 kbps, such as optical isolation of an RS-232C serial line...

Rainbow LED indicates voltage color
Rainbow LED indicates voltage with color
Aug 5, 2025 Circuits

Meters that indicate analog levels via a moving-pointer meter, a numeric display, or a column of LEDs typically occupy considerable panel area and require more than a casual glance to read...

Elaborations yet another Flip-On Flop-Off circuit
Elaborations of yet another Flip-On Flop-Off circuit
Aug 4, 2025 Articles

Applications for using a single pushbutton to advance a circuit to its next logical state are legion. Typically, there are just “on” and “off” states, but there can be more...

Flip ON Flop OFF 48-VDC systems
Flip ON Flop OFF for 48-VDC systems
Aug 3, 2025 Circuits

There have been numerous circuits published in EDN as design ideas for the past few months, centering around the “Flip ON Flop OFF” circuit originally published by Stephen Woodward. These are all designed for DC voltages less than 15 V...

PWM quadrac pure power play
PWM + quadrac = pure power play
Jul 31, 2025 Circuits

This scheme makes power-capable DACs with double-digit wattage outputs...