tetrode
Dual-grid vacuum tube
A tetrode is a vacuum tube with four electrodes: a cathode, an anode, a control grid, and a screen grid.
The screen grid, added between control grid and anode, reduces unwanted capacitance and improves amplification at high frequencies.
Tetrodes were largely superseded by pentodes and then transistors, but remain relevant in high-power radio transmitters.
Oxidation electrode
- cathodeElectrode current exits through
- gridFramework of intersecting lines
- filamentVery thin thread
- plateFlat dish for food
screen · suppressor · heater · socket · envelope · getter · base · pin
Five-electrode vacuum tube
- amplifierSignal-strengthening electronic device
- oscillatorCyclic signal generator
- transistorSemiconductor signal switch
- circuitClosed electrical pathway
current · voltage · impedance · capacitance · gain · frequency · modulation · oscillation
Signal-emitting device
- receiverOne who accepts transmission
- broadcastTransmitted media signal
- shortwaveHigh-frequency radio band
- hamCured pig thigh
amateur · frequency · antenna · RF · signal · tuning · modulation · AM
Old valued collectible
- classicOf lasting excellence
- retroEvoking recent past
- nostalgiaLonging for the past
- collectibleObject worth amassing
historic · bygone · heritage · valve · audiophile · restoration · preserved · museum
anode
Oxidation electrode
plate · screen · suppressor · heater · socket · envelope · getter · base · pin · bulb
pentode
Five-electrode vacuum tube
- amplifierSignal-strengthening electronic device
- oscillatorCyclic signal generator
- transistorSemiconductor signal switch
circuit · current · voltage · impedance · capacitance · gain · frequency · modulation · oscillation · rectifier
transmitter
Signal-emitting device
- receiverOne who accepts transmission
- broadcastTransmitted media signal
- shortwaveHigh-frequency radio band
ham · amateur · frequency · antenna · RF · signal · tuning · modulation · AM · FM
antique
Old valued collectible
collectible · historic · bygone · heritage · valve · audiophile · restoration · preserved · museum · analog
ode, diode, tetra, electrode, tetrad, tetralogy, tetrachord, tetrapod, tetrahedron