Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la
If it fails: lemon-manuals.org.ua

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Electronic Module Retard-Vacuum Switch (EMR-VS)

The electrical contacts of this switch are normally closed. When the TVS directs vacuum to the EMR-VS, the contacts close and complete the circuit to ground. The circuit is energized when 4 or more inches Hg are applied and de-energized when vacuum is reduced to 5.75 inches Hg or less.