pentode
A thermionic valve similar to a tetrode with the addition of a third grid, the suppressor grid to reduce the secondary emission effect; was/is used in high quality audio and radio products.
Noun
- A thermionic valve similar to a tetrode with the addition of a third grid, the suppressor grid to reduce the secondary emission effect; was/is used in high quality audio and radio products.
Origin
From pent- + -ode.