Schematic · n.d.

E-85175 Dial Speed Spotter (pulse testing) circuit explanation

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Circuit explanation for AE dial speed/pulse testing circuit; useful for checking dial speed and break ratio.

Author

Automatic Electric Co.

Year

n.d.

Type

Schematic

Credit

Telephone Collectors International (TCI) Library, telephonecollectors.info (retrieved via Internet Archive Wayback Machine)

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