CONVERTERS RINGING
No. 9A
This Converter Ringing is used when an external extension is fitted to a Planset N625.

The Ringer is powered from the power unit installed to operate the Plansets (Power Unit No. 53A - 10 volt DC).

Modern equivalents to the GPO Ringers

The cover, shown to the right, normally covers the realy


 
 
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Last revised: February 02, 2024

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