Here are 4 simple 12V power supply circuits with output voltages around 12V. First power supply circuit is built with BD139, one zener diode and a few passive components. Each of the schematic is very ...

How many integrated circuits do you need to build up a power supply that’ll convert mains AC into a stable DC voltage? Would you believe, none? We just watched this video by [The Current Sour… ...

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 ...