When you apply forward voltage, Schottky and small-signal germanium diodes exhibit 0.2 to 0.25V and 0.35 to 0.45V drops, respectively. Figure 3 Two LED drivers operating in series or parallel let you ...

You can build a simple low-current voltage regulator from a resistor and a Zener diode. This type of regulator is often adequate for noncritical applications such as internal bias voltages. The ...