An aging and seldom-used automotive battery that had to be kept charged, prompted this engineer to take a new look at an old design.

A few diodes can extend designer options when using latched relays.

Simple on-off (bang-bang) sensors pose a control challenge, but this approach offers an alternative that avoids sustained oscillation.

Varactors have their uses, but this design is more versatile in many situations.

This imaginative design eliminates ripple and greatly speeds a PWM DAC using only a few components.

A look at possibilities on how to make use of MEMS accelerometers to decrease overall power consumption.

This Design Idea regulates high voltage without using high-voltage switching components.

Sense down to femtoamps, all the while maintaining a 160 dB gain adjustment range and optical isolation.

Learn the double dabble, and other ins & outs of efficient base conversion.

A high performance ternary DAC implementation from DAC-master Stephen Woodward.