Generating ozone and negative ions in the air can be done by a corona discharge. For this we can use a sharp tip of negative polarity, acting against a flat metal part of positive or neutral potential...

It’s just a fact of life. A BJT wired in common emitter, even after compensating for the effects of device and temperature variations, still isn’t a perfect current source...

Without a doubt, FM transmitter and receiver are among the top favorite electronic project topics, however, building a digital FM transmitter can be a challenging project for electronics enthusiasts...

Recently, we’ve seen Design Ideas for programmable current sources with improved accuracy using the LM3x7 series of three-legged regulators...

The project presented here is a professional quality phantom powered microphone pre-amplifier...

There’s been interest recently here in the land of Design Ideas in a family of simple interface circuits for pulse width modulation control of generic voltage regulators...

For the past couple of years, I’ve been using AI to assist in the design of my hardware and firmware projects. The experience has generally been good, even though the outcome isn’t always useful...

The switching power supply produces 3.3 V dc from an input voltage of 2.5 to 20 V dc with high efficiency. The circuit operates at an input voltage as low as 1.5 V...

The circuit converts the input DC voltage into a pulse train. The period of the pulses is proportional to the input voltage with a 50% duty cycle and a nonlinearity error of 0.01%...

Bourns, Inc. introduced its Riedon RTDW Series Resistance Temperature Sensors...