Teletypewriter Circuits and Equipment (fundamentals).

Teletypewriter Circuits and Equipment (fundamentals).

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The multiple connections are designated on the schematic circuit diagram as through lines 3 to 9 inclusive. ... All have Tnake- bef ore-break (MBB) contact operation except the line battery switches and ANSWER key, which have break- be fore-make (BBM) contact operation. ... current flows through the local relay windings.

Title:Teletypewriter Circuits and Equipment (fundamentals).
Publisher: - 1991


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