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collections G8LSD Valve Collection |
The GT25E is a wonderful valve. The original design is as a low frequency transmitting valve.
The base is a four pin special and as can be seen from the inset picture the connections are side entry springs. The fitting into the base is by a bayonet action. The pins are short and of 4 mm diameter. The grid is a cylindrical wire mesh cage of substantial gauge. The anode is a copper cylinder bonded to the glass. A finned heatsink, for forced air cooling, is clamped to the anode.
The wide glass tube envelope is 70 mm in diameter and, including the base, is 230 mm tall.
This exhibit was last updated on 04 August 2006
The base is a four pin special and as can be seen from the inset picture the connections are side entry springs. The fitting into the base is by a bayonet action. The pins are short and of 4 mm diameter. The grid is a cylindrical wire mesh cage of substantial gauge. The anode is a copper cylinder bonded to the glass. A finned heatsink, for forced air cooling, is clamped to the anode.
The wide glass tube envelope is 70 mm in diameter and, including the base, is 230 mm tall.
This exhibit was last updated on 04 August 2006
This exhibit was last updated on 04 August 2006
This exhibit was last updated on 04 August 2006 |