• 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.

GE6111 Preamplifier

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metal

metal

Member
Joined 2004
Hi,

I am looking for the schematic of this kit.

Thanks
 

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astouffer

astouffer

Member
Joined 2004
The picture basically shows you the schematic. The 6111 is a dual triode so the parts hidden behind the tube are a mirror of whats in front. The very back looks like part of the heater supply. Look at the resistor bands for the values, once you have them its easy to figure out where they go. The capacitor values may not be be visible but again they aren't hard to calculate.
 
metal

metal

Member
Joined 2004
May be this kit is something like shown below, this is for 35Vdc plate voltage. This is just a quick prediction of what this schematic could be. This way it performs as a buffer. 6N16B/6Н16Б could be used.
 

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metal

metal

Member
Joined 2004
You mean I must use a voltage divider on the Grid:

220K and 13.3K voltage divider provides 2V bias for the Grid using B+ = 35V.
220K and 10K voltage divider provides 2V bias for the Grid using B+ = 48V.

Vk is still 1V.
 
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