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6L6 Author: RCA Subject: FP-1999-02-28 Created Date: 2/24/2002 7:46:40 PM ...
The bias point for 6L6GC tubes depends on the plate voltage that the amplifier is designed to use. Most amps using this tube run between 430-450 volts DC. The 6L6 bias point at 60% dissipation for an amp designed to use 450 volts is: 30/450 x .6 = .04 or 40mA.
11 sty 2024 · You would choose a target bias current, whatever is recommended, then use trial and error with a bit of Ohm's law to pick a resistor value for each tube. The resistor values would need to be kept small enough so that the master bias control would still have enough voltage control range.
20 cze 2024 · #1. Is there a formula or chart for finding the correct cathode resistor for biasing a 6l6 tube? According to my math I have 380v plate voltage running .074ma I should have a 5000ohm cathode resistor.
Use this calculator to determine the bias current for an amplifier’s power tubes. Enter the plate voltage and type of power tubes to get the bias current at various levels of plate dissipation. Amplifier Tube Values
The 6L6GC is a type of beam power tube employing a beam-confining electrode at cathode potential in place of an actual suppressor grid. The Measured Voltage Gain Test Setup. Each tube sample was installed in the same custom built, fixed bias single-ended guitar amplifier (see schematic) with a Fender black face style preamp circuit.
Select your tube type and amp class (Class A, Class AB Low, Class AB, or Class AB High) and enter your Plate Voltage or B+. The calculator will give you the bias current for each tube. Use this as a guide for setting your bias.
