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MATCHED PAIR E188CC SIEMENS TESTED WITH ROETEST V10 BY GAIN NOS/NIB

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Original price was: $351.12.Current price is: $210.67.

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Brand : Siemens
Product Type : Tubes
UPC : Does not apply
MPN : Does Not Apply
gtin13 : Does not apply
Model : E188CC
Type : NOS Tube
Country/Region of Manufacture : Germany
Tube Type : Vacuum Tubes

E188CC SIEMENS GOLD PINS MATCHED PAIR Tested With Roetest V10 By GAIN NOS/NIB All tubes have the same code: G6 1K See in the pictures! They are the very rare and sought after A-frame version. Tested with Roetest V10, “the Rolls Royce of tube testers” [emissionlab quote], a wonderful german professional system for testing tubes, it shows everything about a tube. The Gain parameters is Tub nr.50 μ=33.3 μ=33.3 Tub nr.51 μ=33.3 μ=33.3 Those who use tubes are more familiar with terms like bias, gain (µ), plate current, slope/transconductance, and maybe someone is wondering what the term „D of plate” in the measured data means. Its value in itself is not so important but it is useful to calculate the other parameters taking into account Barkhausen’s tubular formula S x D x Ri = 1 (slope * penetration * internal resistance=1), where D is –dUg/dUa at Ia=const. Barkhausen vas a german physicist, he was “the guru” of tubes, his theory and formulas guided the entire period of electronic tubes. Please allow for the following shipping times: EU countries: 5-8 business days, on rare occasions a few days more USA: 10-15 business days, on rare occasions more South East Asia (Japan, Singapore, S. Korea, Hong Kong, Taiwan etc) 10 business days, on rare occasions more India, China, Russia, Kazakhstan, Pakistan, Indonesia, Malaysia, Thailand, Australia, South Africa etc: at least 15 business days, but frequently around 25 business days Please note that shipping cost is calculated at average. If you have any objections please contact me for a specific quotation.

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