🔍 Key Concepts
• Vacuum tube basics: what each element (cathode, control grid, plate/anode, screen grid, suppressor grid) does
• The names of tubes based on how many active elements they contain (diode, triode, tetrode, pentode)
• The purpose of a screen grid placed between the control grid and the plate
💭 Think About
• First, count how many elements this tube must have if it already resembles a triode and then adds a screen grid between plate and control grid
• Match that number of elements to the names: which device has 2, 3, 4, or 5 active elements?
• Consider which type of tube is specifically known for including a screen grid to reduce capacitance between plate and control grid
✅ Before You Answer
• Be clear on how many electrodes a diode, triode, tetrode, and pentode each have
• Confirm that the screen grid is an added electrode beyond what a triode already has
• Eliminate any option whose definition does not include a screen grid between plate and control grid