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-   -   REN Booster (https://www.vintage-radio.net/forum/showthread.php?t=66088)

terrykc 27th Oct 2012 4:22 pm

Re: REN Booster
 
Quote:

Originally Posted by dagskarlsen (Post 563713)
... Those vibrators are tuned to a specific frequency ...

Yes, by the simple expedient of adding a weight to an extension of the paddle operating the switching contacts. This effectively made a pendulum, resonant, usually, at 50Hz.


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