Testing circuit for fuel burner controls

Electrical transmission or interconnection systems – Plural load circuit systems – Common conductor or return type

Patent

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Details

307113, H02J 108

Patent

active

043497454

ABSTRACT:
A testing circuit for a control system has a two-state input circuit connected across a plurality of switching devices. The input circuit assumes one state when any one of the contacts is closed and the other state when they are all open. An indicator device shows whether the contacts are functioning correctly.

REFERENCES:
patent: 4095123 (1978-06-01), Takahashi

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