Catalogue
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Mullard Radio Valve Type ECC35, by Mullard, Britain, 20th Century
Inventory Number: 96920
Number of documents: 2
Document Type: Miscellaneous Note
Document Heading: Historical Background - British Radio Valve Manufacturers' Association (BVA)
Text:
The British Radio Valve Manufacturers' Association (BVA) was established in July 1926 and was a registered trade union. It had been preceded by the Valve Manufacturers' Association, which had established a 'Memorandum of Sales Plan'. This agreement, which was signed by the seven major British valve manufacturers, secured a uniform practice in the sale of radio valves for broadcasting purposes in the UK. Practical examples included similar discounts and sales conditions, and were considered a form of restrictive practice. This association continued into the 1950s.
Document Type: Miscellaneous Note
Document Heading: Technical Details
Text:
The ECC35 was medium impedance double triode with modest gain, probably designed as general purpose valve with instrumentation applications as main focus. Anode structure of twin triodes can be clearly seen, and anodes are very thin in relation to their area.
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