Valve Factory Virtual Tour AWV Ashfield Sydney Australia

Valve Testing

Cover picture from Radiotronics number 123, January/February 1947.

"Our cover this issue shows the complete set-up used for the production testing of converter valves in the Radiotron works. looking from left to right, the equipment consprises a preheater, a push-button operated relay-operated characteristics test set and a radio frquency (RF) noise set in the screened room.

The sequence of testing provides that AC types are first preheated under maximum dissipation and cathode current conditions, then tested for reverse grid current, electrode charcteristics, conversion conductance and oscillation in a typical oscillator circuit.

Following these tests, valves are finally checked for emission, after which they are operated in the converter stage of a typical radio receiver in the screened room and tested for noie and sensitivity"

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Acknowledgment: This web page contains text and images from Radiotronics number 123, January/February 1947. A Radiotron technical release published in Sydney, N.S.W., by Amalgamated Wireless Valve Company Pty. Ltd.

Retrovox/RMay1951/Valve Factory