New posts in Vacuum Tube

In a parallel plate capacitor, how does placing a metal in between the plates reduce the capacitance?

Troubleshooting Hum in a Tube Guitar Amp

In a vacuum triode, what prevents the grid from acting as another anode?

Coloured coating within CRT

Why put a step-down transformer after a vacuum tube in an a valve amplifier?

Which particular transistor types represent triode and pentode vacuum tubes best?

Tube cathode biasing with CCS

How to identifiy this "2222 063 90025" vintage capacitor?

When a AM radio wave reaches the antenna does the signal need to be in a closed circuit to be amplified?

Why are thermionic valve/tube heaters generally designed to be 6.3 V?