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PETERVENTECH · 02-10-12, 07:51 PM

In 1969 none of the Fleet's MK23 torpedoes worked properly. At extreme range control was last due to a defect in the agc circuit. The fault was eventually traced to a CV7013 silicon diode which had replaced the CV7031 germanium diode, following a Naval Stores instruction. Unfortunately the AFC circuit was dependent on the germanium junction characteristics to work properly & when the diodes were replaced, the control circuits failed, so for a while, the Fleet had no working Mk23 torpedoes, till the GEC made guidance units were modified.

02-10-12, 07:51 PM	#10
PETERVENTECH Bilge Rat Join Date: Aug 2010 Location: STAFFORD Posts: 1 Downloads: 0 Uploads: 0	MK23 RANGE PROBLEMS In 1969 none of the Fleet's MK23 torpedoes worked properly. At extreme range control was last due to a defect in the agc circuit. The fault was eventually traced to a CV7013 silicon diode which had replaced the CV7031 germanium diode, following a Naval Stores instruction. Unfortunately the AFC circuit was dependent on the germanium junction characteristics to work properly & when the diodes were replaced, the control circuits failed, so for a while, the Fleet had no working Mk23 torpedoes, till the GEC made guidance units were modified.