Plate voltage. All current passes through cathode resistor and it only makes sense since plate current does, so would screen current. Same for voltage readings on both plate and screen too. If you slow the flow of electrons from cathode to plate the voltage drop across the load resistor will decrease causing a voltage rise on the plate. You will likely measure voltages in the 250-500V region. Measure at the pin on the back of the socket. Set it as shown in the picture, 1000V DC. The meaning of PLATE VOLTAGE is the constant component of the potential difference between plate and cathode in an electron tube. Mar 17, 2013 · Len,plate voltage is the voltage on the plate of an output tube. When idling current goes up the plate voltage goes down. You see 380 volts when the valves are not drawing current at first switch on. Stop the flow completely and the voltage on both sides of the load resistor will equalize at 250 volts. Jul 11, 2012 · If you're biasing, you'll need to leave the tube in place. The Renegade has about 460-470 volts dc. Apr 26, 2021 · The maximum anode (plate) voltage is 550 volts as long as the valve is not drawing any current. Aug 11, 2025 · In summary, higher plate voltage generally yields a brighter tone with more gain and cleaner sound, while lower plate voltage leads to earlier breakup, more compression, and a warmer, distorted tone—all of which impact the subjective "sound" of vacuum tubes in audio applications. . emrjvg plooc vxninc lihuc nckkiu huseo lrm qaefv icbxv bizn