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The top of the envelope has etched markings and it is clear that this is a Pen22D and not a Pen220. However, we have not found details of the operating conditions of the Pen22D as yet.
A look at the electrodes shoes the wire grids and the filament wires. The latter form a series of vertical zig-zags and each turning point is supported by a spring.
The balloon envelope is 43 mm in diameter and, excluding the B5 base pins, is 96 mm tall.
This exhibit was last updated on 28 February 2004
A look at the electrodes shoes the wire grids and the filament wires. The latter form a series of vertical zig-zags and each turning point is supported by a spring.
The balloon envelope is 43 mm in diameter and, excluding the B5 base pins, is 96 mm tall.
This exhibit was last updated on 28 February 2004
The balloon envelope is 43 mm in diameter and, excluding the B5 base pins, is 96 mm tall.
This exhibit was last updated on 28 February 2004
This exhibit was last updated on 28 February 2004 |