Search the collections
Electronic Valve - Marconi Osram Valve Co, Triode, Type VR37, circa 1940. Reg. No: ST 029228
- Triode, used as a detector, amplifier (Class A) or oscillator in mains powered receivers. Manufactured during the 1930s and 1940s by Valve Manufacturer Osram in England. VR37 is the British military designation for the MH4 triode manufactured by Marconi Osram Valve Company. It is also known as a CV1037. This valve was also manufactured in an external anode form called a Catkin.
4 volt indirectly heated cathode
- Glass bulb, European standard 5 pin base.
- Acquisition Information:
- Donation from Mrs F. Jeffery, 1976
|Dimensions:||111 mm (Length), 45 mm (Diameter)|
|Tagged with:||thermionic electron valves, l12|
|Themes this item is part of:||Engineering Collection, Information & Communication Collection|
|Secondary Classification:||Vacuum Technology|
|Inscriptions:||Bulb: MADE & PATENTED IN ENGLAND/VR37/10E/9598|
|Manufacturer:||Marconi Osram Valve Co., England, Great Britain, circa 1940|