# selenium rectifier

> metal rectifier, invented in 1933, used in power supplies for electronic equipment and in high-current battery-charger applications until the late 1960s

**Wikidata**: [Q1456489](https://www.wikidata.org/wiki/Q1456489)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Selenium_rectifier)  
**Source**: https://4ort.xyz/entity/selenium-rectifier


## References

1. Freebase Data Dumps. 2013