Application of the "Memnoscope" to Rectifier Study

The "memnoscope" is a device employing rotating condensers for studying randomly occurring electrical phenomena. This paper describes some records obtained with the "memnoscope" when studying arcbacks in shielded mercury-arc rectifiers. It has been found that arcbacks may occur on the shield, without a cathode spot forming on the anode and without resultant disturbances in the external electrical circuits.