screen voltage การใช้

• Arcs can also be initiated by any loose material inside the tube, or by excess screen voltage.
• The 807 is not a good choice of tube for typical Ultra-Linear amplifier circuits, as the maximum screen voltage at 300 V is less than half the maximum plate voltage of 750 V . A possible solution is to use an output transformer with a separate ultralinear screen winding, such as the Acrosound TO-350.