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→Types of diodes: links
=== Rectifier ===
=== Rectifier ===
Rectifier diodes were originally made using selenium, then germanium, and now silicon.
[[Rectifier]] diodes were originally made using [[selenium]], then [[germanium]], and now [[silicon]].
They range from tiny as a grain of sand for surface mount to very large modules weighing pounds.
They range from tiny as a grain of sand for surface mount to very large modules weighing pounds.
This type is used for converting alternating electricity into pulsed-direct-current electricity, or for preventing current from flowing backwards in any circuit. For example, when a solar panel charges a battery during the daytime, it can then drain the battery at night - but a diode in series will prevent the current from flowing back through the solar panel at night.
This type is used for converting alternating electricity into pulsed-direct-current electricity, or for preventing current from flowing backwards in any circuit. For example, when a solar panel charges a battery during the daytime, it can then drain the battery at night - but a diode in series will prevent the current from flowing back through the solar panel at night.
Modern x-ray tubes operate on the very same principle as a vacuum tube diode, however they usually have mechanisms to keep the plate from getting too hot and melting.
Modern x-ray tubes operate on the very same principle as a vacuum tube diode, however they usually have mechanisms to keep the plate from getting too hot and melting.
==References==
==References==