5CU4 Tubes

1) Cathode: The cathode is the negatively charged electrode in a tube. It is usually made of a metal such as tungsten and is where the electrons originate from. It is also responsible for providing the voltage necessary for the tube to function. 2) Grid: The grid is an open-air conductive element around the cathode that allows the electron flow to be adjusted or manipulated. It is often made from a metallic wire and is suspended in the tube with a slight negative charge, so that it can be used to control the current in the tube. 3) Anode: The anode is the positively charged electrode in the tube. It is usually made of a metal such as aluminum or copper, and it is where the electrons flow to and from. It has the capacity to absorb and emit electrons in order to create a flow of current. 4) Heater: The heater is a small filament that is heated electrically in order to provide the electrons necessary to fill the vacuum of the tube. It is usually made of a metal such as tungsten and is powered by an AC or DC voltage source. 5) Plate: The plate is a conducting element inside the tube that is used to control, direct and modify the flow of electrical current. It is often made from a metal such as aluminum or copper and is usually connected to either the cathode or the anode in order to regulate the flow of electrons.