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Amperex/Philips Z550M “Pixie” Cold Cathode Numerical Indicator Tube
Tube indicateur des chiffres décimaux à cathodes froides
Kaltkatodenröhre zur Anzeigung der dezimalen Zahlen

The Z550M uses a stencil mask with numeral-shaped holes arranged in a circle, instead of the shaped cathodes of the Nixie tubes. It has been developed to satisfy the need for a decade indicator tube which can operate directly from the low voltage electrical readout provided by transistor scalers (counters). It requires an input signal of about 5V at a current of about 50 μA.

Fiche technique • Data sheet • Datenblatt: Z550M.pdf & ZM1050.pdf

J.B. Dance, The Z550M Indicator Tube in Electronic Counting Circuits, London ILIFFE Books Ltd., New York American Elsevier Publishing Compagny Inc., 1967.

Decade Indicator Operates Off Transistors, Electronics, November 1961.

 

Amperex/Philips Z550M Pixie Cold Cathode Numerical Indicator Tube

Left: Amperex. Right: Philips.

Hauteur • Height • Höhe : 32 mm • 1" 1/4
Diamètre • Diameter • Durchmesser : 28 mm • 1" 1/8

Amperex/Philips Z550M Pixie Cold Cathode Numerical Indicator Tube

Amperex/Philips Z550M Pixie Cold Cathode Numerical Indicator Tube

Amperex/Philips Z550M Pixie Cold Cathode Numerical Indicator Tube

Left: Schematic representation of the electrode arrangement.
Right: Exploded view of the indicator tube.

 


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