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Field effect tube amplifier circuit [Copy link]

Field effect tube amplifier circuit

Experimental content:

1. Observe the output waveform

in conclusion:

The output is inverted from the input.

2. The impact of load changes on amplification

Load open circuit: U o =68.48mV

Load resistance R L =10kΩ: U o =47.88mV

Load resistance R L =5kΩ: U o =36.81mV

Load resistance R L =1kΩ: U o =12.91mV

in conclusion:

When the load is open, the amplification factor is maximum; the amplification factor decreases as the load resistance decreases.

Simulation experiment demonstration

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