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I want to use elevated heaters in a Marshall amp. Help.
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Perhaps 2x 470k in series if you don't have a 1M resistor that can handle at least 400Vdc.
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So based to a voltage divider calculator a power source of 440VDC with R1= 1M and R2=100k should give me a 40VDC elevation.
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Originally posted by Helmholtz View PostDo not connect the heater CT directly to a high voltage supply. You need a voltage divider and an extra filter cap as shown in the Valvewizard article or used in the Marshall JVM410.
Post your schematic and layout.
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Do not connect the heater CT directly to a high voltage supply. You need a voltage divider and an extra filter cap as shown in the Valvewizard article or used in the Marshall JVM410.
Post your schematic and layout.
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The Marshall DSL401 uses elevated heaters.Attached Files
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I want to use elevated heaters in a Marshall amp. Help.
Hello All,
I want to use elevated heaters in a Marshall High Gain Amp Design. How do I do it? Would I attached the CT of the filament to an un-used Positive Lug of a Can Cap with a resistor going to ground to lower the voltage. Would I need a balancing resistor between the 2 pos lugs if it were a dual can like a 16/16uF 450VDC? What formula would I use to determine the value of the resistors?? Can anyone explain the manner in which to do this correctly? ThxTags: None
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