Rolls-Royce Archives
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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).
Graph showing the open circuit voltage curves for a Smith (T&M) Type A Dynamo with separate excitation.

Identifier  WestWitteringFiles\C\August1919\  Scan50
Date  13th June 1919
  
SMITH (T&M) TYPE A DYNAMO
OPEN CIRCUIT VOLTAGE CURVES
SEPARATE EXCITATION
VOLTS
90
80
70
60
50
40
30
20
10
0
FIELD AMPERES
0
1
2
3
4
5
MAIN VOLTAGE 2500 R.P.M.
MAIN VOLTAGE 1500 R.P.M.
VOLTAGES BETWEEN MAIN -VE AND AUXILIARY -VE BRUSHES
2500 R.P.M.
1500 R.P.M.
A
E.7.C.
13/6/19
  
  


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