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).
Two graphs showing the variation of capacity with temperature for different types of paper condensers.
| Identifier | ExFiles\Box 52\3\ Scan193 | |
| Date | 27th March 1924 guessed | |
| VARIATION OF CAPACITY WITH TEMPERATURE OF PAPER CONDENSERS. I TOP GRAPH: CAPACITY (M FDS.) TEMPERATURE (°C) 1580 STANDARD CONDENSER BUT NOT BAKED. IMPREGNATED WITH COMMERCIAL PARAFFIN WAX. 1312 CONDENSER MADE UP WITH UNTREATED WHITE PAPER & THE WHOLE IMPREGNATED WITH COMMERCIAL PARAFFIN WAX. 1600 CONDENSER MADE UP WITH UNTREATED WHITE PAPER AND THE WHOLE IMPREGNATED WITH PURE WAX. MELTING POINT:- 125°F. {Mr Friese} No. 1580 No. 1312 (BROKE DOWN) No. 1600 BOTTOM GRAPH: CAPACITY (M FDS.) TEMPERATURE (°C) 1609 STANDARD CONDENSER IMPREGNATED WITH A MIXTURE OF COMMERCIAL WAX AND RESIN AND THEN BAKED. 1576 CONDENSER MADE UP WITH UNTREATED WHITE PAPER AND THE WHOLE IMPREGNATED WITH PURE WAX. MELTING POINT:- 140°F. {Mr Friese} No. 1609 No. 1576 | ||