This variable power supply is using 7805, 7809, 7812 or 7815 voltage regulators, where the last 2 digits represents the maximum output voltage of the IC. This circuit offers excellent ripple rejection ...

I certainly agree with you that a Zener diode could be used in the typical Zener regulator circuit, but it would be slightly more helpful to point to his mistake. In his example Vin=5V, Vout=3.3V ...

A circuit like hat is even more useful as a over current limiter – I use a 3.3V regulator and a 100 ohm resistor as a limiter in a power supply that tests 4-20mA current loop devices, so that ...

3. The TI LM4040 2.5-V voltage-reference curve shows its high voltage accuracy even when biased well below 100 µA. Using the same 12-V example as above, but with 75 µA for I z instead of 5 mA ...

The circuit in Figure 1 employs LEDs in a series-connected chain as the stabilization elements in a voltage regulator. It makes use of the fact that a green LED’s current-voltage characteristic ...