• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Anyone listen a 46 in UL mode ?

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Eli Duttman

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Joined 2004
Even though it contains 2 grids, the #46 is not a tetrode. The tube was engineered in a time frame where limiting inventory was important. Set a #46 up 1 way and it is a nice, linear, Class "AB1" driver. Set the tube up the other way and it's a Class "B2" power O/P. Both setups are triodes!
 
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aldovan

Member
Joined 2005
Eli Duttman said:
Even though it contains 2 grids, the #46 is not a tetrode. The tube was engineered in a time frame where limiting inventory was important. Set a #46 up 1 way and it is a nice, linear,

Class "AB1" driver. Set the tube up the other way and it's a Class "B2" power O/P. Both setups are triodes!
Click to expand...

Eli

Ok, use the 46 as exemple do not is a good idea.
But I want know if is possible use a true tetrode as 4-65A or other in a ultra linear connection...
This is my doubt !

thanks

Aldovan
 
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aldovan

Member
Joined 2005
This is the circuit

Eli Duttman said:
Even though it contains 2 grids, the #46 is not a tetrode. The tube was engineered in a time frame where limiting inventory was important. Set a #46 up 1 way and it is a nice, linear, Class "AB1" driver. Set the tube up the other way and it's a Class "B2" power O/P. Both setups are triodes!
Click to expand...


I think in built this circuit...

Aldovan
 

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  • 2E25 SE UL Tetrode Class A.jpg
    2E25 SE UL Tetrode Class A.jpg
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aldovan

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aldovan

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Joined 2005
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