Ericsson polarity changer RH2002
This Ericsson polarity changer RH2002 according the schematic from 12.11.37. Has been used to generate ringing voltage in switchboard.
Totally in condition as I bought it, marble sheet broken.
Has been in use so much that the silver from fixed contacts has been totally wean out !
Spare moving contact inside case.
This is very heavy because of transformer and thick marble sheet. Case made from oak.
Totally in condition as I bought it, marble sheet broken.
Has been in use so much that the silver from fixed contacts has been totally wean out !
Spare moving contact inside case.
This is very heavy because of transformer and thick marble sheet. Case made from oak.
