What diode should be used for DC voltage reduction

What diode should be used for DC voltage reduction

Any diode can reduce voltage because the diode is conducting and there is a certain voltage drop at both ends. Different types of diodes have different forward voltage drops, usually within the range of V0.5V to 0.7.

Therefore, one or more diode can be used in series to achieve voltage reduction, but it must be noted that when the diode is voltage reduced, the current flowing through the diode cannot exceed its large forward current, otherwise the diode will be damaged.

A crystal diode is a p-n interface formed by sintering p-type and n-type semiconductors. A space charge layer is formed on both sides of the interface, forming a self built electric field. When the applied voltage is equal to zero.

The pn junction on both sides of the Diffusion current caused by the carrier concentration difference is equal to the generated Drift current, self built electric field and electronic balance state, which are also the characteristics of the diode under normal conditions.