Previous : GEC Miniscope

EMI SCOPE / VOLTMETER

Next : Hartley 13A

Front View [34K]

  • Late 1940's ?
  • 6 valves (Z66, 6J5GT, two KT81
    plus two U80 rectifiers.)
  • A.C. Mains
  • Original cost unknown.
NOTES
A rather odd instrument, combining a volt meter with an oscilloscope.

The oscilloscope section is uncalibrated and hence was intended to give an indication of the shap of a wavefrom more than an accurate measurement.

The use of large octal or similar valves indicate that the instrument surely dates from the late 40's or possibly the very early 50's. However the controls are quite colourful for the period, are they original ?
SERVICE DATA Nope :-(
CURRENT STATE Basically clean and sound. Some evidence of repairs in the distant past, with the E.H.T. rectifier (probably a SenTerCel) replaced by four more modern semiconductor diodes in series. The H.T. smoothing electrolytics have also been replaced.
WHERE FOUND Bought locally for a fiver.

Chassis View [35K]
For something with only one more valve than a domestic radio,
the mains transformer (rear of right-hand image) is enourmous.


Page copyright
J.Evans 2003
CLICK HERE TO RETURN TO
THE OSCILLOSCOPE GALLERY
Last updated
20th July 2003