Low-power circuits commonly use transformerless power supplies. However, the use of earth grounds in many of these circuits creates a serious problem that is often ignored. The very popular ...

You can set the sense voltage for the 1.8V output to track the 3.3V output rather than the 2.5V with equally good linear tracking during start-up. You can add this sequencing circuit to any ...

On one end of the twisted pair is a power supply and decoder circuit, which sends 9 volts up the line to power the PIC sensor. The decoder is based on a CD4538 dual monostable multivibrator, set ...

The simple ripple-eater shown here is far simpler and offers about 40 dB of low-power cleaning at audio frequencies , making it useful for such functions as pre-amplifiers. The design simply ...