pentode

Quintuple-element valve

A pentode is a vacuum tube with five electrodes—cathode, anode, control grid, screen grid, and suppressor grid.

The additional grids give pentodes better amplification and stability than simpler tubes like triodes.

Pentodes were essential components in radio receivers, amplifiers, and early electronic equipment before transistors replaced most vacuum tube technology.

electronics

vacuum

Absence of matter

  • tubeHollow cylindrical passage
  • valveFluid flow controller
  • electronNegative subatomic particle

grid · filament · heater · screen · suppressor · plate · thermionic · envelope · glass · socket

amplification

gain

Positive return received

  • voltageElectrical potential difference
  • powerEnergy transfer rate
  • signalMessage-conveying cue

linearity · distortion · feedback · output · driver · preamp · stage · push-pull · single-ended · headroom

radio

transmitter

Signal-emitting device

RF · mixer · oscillator · detector · tuner · ham · amateur · vintage · regenerative · chassis

Opposites
electrode count in vacuum tubes

pentodediode

One-way semiconductor

triode · tetrode

vacuum tube vs solid-state technology

pentodetransistor

Semiconductor signal switch

integrated circuit · semiconductor · silicon chip

Family

ode, pentagon, diode, electrode, anode, cathode, pentathlon, pent, triode

Familiarity
Top 1,000,000
Profile
Used worldwide · Timeless · Concrete · Rated G