>
>> Make that 19th century. The essential component that allows two-way
>> transmission on a single pair
>>of wires, the bridge (or hybrid) transformer, was a late 19th century
>>invention. The clue is that ground
>>is the third conductor.
>
>
>There is still a lot of gas in that tank.
>
Tell me about it. I've designed and patented a few circuits using that
ancient device. A little knowledge like that can take you a long way. And
it's the device that made the bidirectional transatlantic cable amplifiers work.
Chris
When the going gets weird, the weird turn pro
- Hunter S. Thompson
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