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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).
Output-Speed curves for an Aero Type U₂ wind-driven dynamo, comparing vibrator regulator controlled and uncontrolled performance.

Identifier  ExFiles\Box 31\1\  Scan088
Date  1st October 1925
  
TITLE: OUTPUT - SPEED CURVES OF AERO TYPE U₂ WIND DRIVEN DYNAMO Vibrator Regulator controlled and uncontrolled.

LEFT Y-AXIS LABEL: OUTPUT CURRENT (AMPERES)

RIGHT Y-AXIS LABEL: FIELD CURRENT (AMPERES)

X-AXIS LABEL: DYNAMO SPEED (R.P.M.)

DATA TABLE:
Header: OPERATING VOLTAGES
Sub-headers: SPEED (HOT, COLD), TERMINAL (HOT, COLD)
Columns (from left to right are d, c, B, A):
14.5 | 15.0 | 14.0 | 14.0
14.4 | 15.0 | 14.0 | 14.0
14.3 | 15.0 | 14.1 | 14.0
14.2 | 14.8 | 14.3 | 13.9
14.1 | 14.5 | 14.1 | 13.2
14.0 | 15.0 | 13.8 | 12.9
14.1 | 15.4 | 13.6 | 12.6

CURVE LABELS:
FIELD CURRENT FOR REG. NO 174. CURVE 'C' ONLY
PLAIN DYNAMO (COLD)
FOR REGULATOR NO. 174
CONTROLLED (HOT)
CONTROLLED (COLD) CHAR A
CONTROLLED (HOT) CHAR C
(COLD) CHAR C

OTHER TEXT:
Bottom Right Corner: S.2.C.
  
  


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