![Example of single tube triode grid-leak receiver from 1920, the first type of amplifying radio receiver. In the grid leak circuit, electrons attracted to the grid during the positive half cycles of Example of single tube triode grid-leak receiver from 1920, the first type of amplifying radio receiver. In the grid leak circuit, electrons attracted to the grid during the positive half cycles of](https://c8.alamy.com/comp/P6NEFT/example-of-single-tube-triode-grid-leak-receiver-from-1920-the-first-type-of-amplifying-radio-receiver-in-the-grid-leak-circuit-electrons-attracted-to-the-grid-during-the-positive-half-cycles-of-the-radio-signal-charge-the-grid-capacitor-with-a-negative-voltage-of-a-few-volts-biasing-the-grid-near-its-cutoff-voltage-so-the-tube-conducts-only-during-the-positive-half-cycles-rectifying-the-radio-carrier-P6NEFT.jpg)
Example of single tube triode grid-leak receiver from 1920, the first type of amplifying radio receiver. In the grid leak circuit, electrons attracted to the grid during the positive half cycles of
![analog - Triode Regenerative Receiver Circuit - room for improvement and possible errors - Electrical Engineering Stack Exchange analog - Triode Regenerative Receiver Circuit - room for improvement and possible errors - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/dPBkO.jpg)
analog - Triode Regenerative Receiver Circuit - room for improvement and possible errors - Electrical Engineering Stack Exchange
![Iconfactory launches free internet radio player for iPhone, Mac, Apple TV w/ iCloud syncing, CarPlay support, more - 9to5Mac Iconfactory launches free internet radio player for iPhone, Mac, Apple TV w/ iCloud syncing, CarPlay support, more - 9to5Mac](https://9to5mac.com/wp-content/uploads/sites/6/2019/11/triode-free-internet-radio-player-iphone-apple-tv-mac.jpeg?quality=82&strip=all)