When was the Electrical Relay invented?
The Electrical Relay was invented in 1835 by Joseph Henry in the USA.
An electromagnetic switch that opens or closes circuits using a small control signal.
| Year invented | 1835 |
|---|---|
| Inventor | Joseph Henry |
| Country | USA |
| Category | Energy |
Who invented the Electrical Relay?
Joseph Henry invented the Electrical Relay in 1835 in the USA.
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