The NU13 is a majestic piece of glassware. It is a half wave rectifier and the NU13 tells us that this was made for the UK Navy.

The wide glass tube envelope is 48 mm in diameter and, excluding the L4 base pins, is 158 mm tall.

The L4 base is 55 mm square, and is a substantial item. The valve serial number is 4581.

 
Absolute Maximum Operating Conditions

Rectifier	Vh	Ah	mAa
	6.0	-	120

This exhibit was last updated on 15 February 2004