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).
Connection diagram for high-tension direct current (HTDC) tests of insulation using a trembler coil and rectifying valve.
| Identifier | ExFiles\Box 39\3\ Scan280 | |
| Date | 29th April 1927 | |
| INTERMITTENT POSITIVE H.T. MAIN DIAGRAM OF CONNECTIONS FOR H.T.D.C. TESTS OF INSULATION WITH TREMBLER COIL & H.T. RECTIFYING VALVE. H.T. + C E R.R. TREMBLER COIL SWITCH BATTERY H.T. B- F- D H.T. RECTIFYING UNIT H.T.D.C. MAIN DATUM CONDUCTOR H.T. CONDENSER (.3 MICROFARAD) WITH SAFETY GAP CALIBRATED H.T. SPARK GAP M.A. MILLIAMMETER WITH SHUNTED CONDENSER. INSULATION UNDER TEST (DIAGRAMMATIC) EARTH E.F.C. 29-4-27 | ||