Relevance

The main advantage of the tungsten cathode is the high stability of the emission during operation, so it is used in electronic tubes, where a high constancy of the anode current is required. On the other hand, it has the disadvantages of a high yield and consequently a high operating temperature, and a low efficiency.

Technical Characteristics

The operating temperature of the tungsten cathode is in the range of 2400 - 2,700°C. In this temperature range, the emission current density is 0 1 to 1 6 ^a/cm2, and the efficiency is 2 to 16 ma/watt. The low efficiency of the tungsten cathode makes its application limited. Generally, tungsten cathodes are used only in devices with high emission current constancy requirements. In most high-power generator lamps, tungsten cathodes have been superseded by more efficient toric cathodes.

Supplier

The supplier Evek GmbH offers to buy tungsten cathodes, the price is optimal in this product segment. Full compliance with international quality standards. We offer to buy tungsten cathode from specialized warehouses of the supplier Evek GmbH with delivery in any city.

Buy, best price

We offer tungsten cathode, the price is determined by the technological features of production without including additional costs. Products with non-standard parameters can be ordered. We have the best price-quality ratio for the entire range of products. In the segment tungsten and refractory metals, Evek GmbH is a profitable supplier. Timely delivery is ensured by representatives in Eastern European cities.