Rolls-Royce Archives
         « Prev  Box Series  Next »        

From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Different types of rectifiers for chassis batteries, recommending the B.T.H. Tungar rectifier.

Identifier  ExFiles\Box 32\5\  Scan004
Date  31th October 1922
  
X1589

To R.{Sir Henry Royce} from EFC.
c. to OJ.
c. to PN.{Mr Northey}

EFC1/T31.10.22.

X.664. RE RECTIFIER FOR CHASSIS BATTERIES
X.1589.

Answering your R1/M27.10.22 I believe the most successful non-revolving rectifier is the B.T.H. Tungar rectifier, of which I send particulars herewith.

I do not think that a mercury vapour rectifier is adaptable to small outputs, also as far as I know, not having actually used one, (except a home-made one), a chemical ectifier or Noden valve is inefficient, messy, and rather generally unsatisfactory. One would judge that if they gave any real degree of satisfaction that one would see them more in use, but actually I have seen very few.

The Tungar rectifier of course is an application of a thermionic valve as you mention.

EFC.
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙