Valve (vacuum tube) help please

  • Thread starter Dezz101
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  • #1
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Main Question or Discussion Point

Hey I was just wanting to know, for something like a guitar amplifyer what is the inputted signal connected to on the valve (cathode, anode, filament or grid) and also what the outputed signal is connected to.

thanx
 

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  • #2
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iM GUESSING THE INPUT IS THE GRID, AND THE OUTPUT IS THE CATHODE AND ANODE???
 
  • #3
dlgoff
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Here's a pic from http://en.wikipedia.org/wiki/Valve_amplifier" [Broken]
 

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  • #4
turbo
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Think of an emitter (cathode) and a receptor (anode). This is a simple diode. If you put a grid between them (to make a simple triode) and hit it with an input signal, you can suppress or allow the flow of electrons from the cathode to the anode. Thus, a small input signal can be made to produce large variations in the output signal. The filament is a simple resistive heater that is used to warm to cathode so that electrons can be driven off it more easily.
 

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