Unknown Rectifier


Yes it is another 'what is it?' post.  I came across some black prism shaped
components 6.5 inches long by 0.75 inches square.  The two terminals are
about 0.5 inch in from each end on one long surface (one at each end).  The
writing says:

RVP 40
EDI 7008

With the symbol for a diode beneath that.  They were made up into a bridge.
Any help appreciated.

Have a good Christmas break.

Dr B.

Dr Brian H Le Page
Composites Research Group
School of Mechanical and Materials Engineering
University of Surrey