£494.12

3B Scientific U19157 Teltron Triode, Helium-filled, D

U19157

Price data last checked 133 day(s) ago - refreshing...

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£494 today · previous high £494 · all-time low £460

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Price History & Forecast

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Last 350 days • 350 data points (No recent data available)

Historical
Generating forecast...
£494.12 £456.95 £465.06 £473.17 £481.28 £489.39 £497.50 10 February 2025 08 May 2025 03 August 2025 29 October 2025 25 January 2026

Price Distribution

Price distribution over 350 days • 5 price levels

Days at Price
Current Price
14 days 60 days 12 days 117 days 147 days · current 0 37 74 110 147 £460 £462 £492 £493 £494 Days at Price

Price Analysis

Most common price: £494 (147 days, 42.0%)

Price range: £460 - £494

Price levels: 5 different prices over 350 days

Description

Electron tube filled with low-pressure helium gas, and containing a thermionic cathode, control grid, and anode. This tube is for quantitative investigations of the typical properties of a gas-immersed triode, recording the current-potential (IA-UA) characteristics of a thyratron, and observing discharges and discontinuous energy release of helium atoms during inelastic collisions with free electrons.

Key Features

Max. heater voltage: 7.5 V AC/DC

Max. anode voltage: 500 V

Anode current: approx. 10 mA at 200 V (anode)

Easy to Use

Product Specifications

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