Valve amplifier circuit used by Trevor Pearcey, an Australian computing pioneer who designed CSIRAC, Australia's first computer. This amplifier circuit was possibly used later in Pearcey's career; it is difficult to say if it was used with CSIRAC but it is of the same vintage.

The item lacks the two vacuum tubes required and a power supply.

Physical Description

Rectangular metal box with plugs on the top. Inside are a Ducon condenser, electrolytic capacitor and other electronic components. The valve sockets are designed for 8 and 9 pin valves

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