The circuit uses a 78L05 linear regulator to decrease the power-supply voltage to 5V. The 1N4007 between the 24V dc and the 5V LM7805 regulator protects the circuit from possible power-supply wire ...

With the source taken care of [Glitch] uses an optoisolator for both protection and level conversion. After working the bugs out of the design he was able to control the relay using 3.3V, 5V, or 12V.

IC-Haus introduced the iC-HD2, iC-HD7 and iC-HE line drivers for 5 V and 24 V industrial encoder/sensor applications. The output drivers are designed for cable impedances in the range of 30 to 140 ...

I was pondering possible interfaces between a microcontroller and a 12 or 24V 5015 blower fan. The challenge is that the MCU can only drive 3.3 or 5V, while the blower needs needs a voltage as low as ...

Diodes, one-way current conductors, are used for voltage regulation, AC/DC conversion, and circuit protection. Forward-biased at 0.6V, conduct current, reverse bias blocks it.