Variable Gain Preamplifier with two jFET j.310 - LTspice [Free Download]
18 May 2022 15:29 - 23 Aug 2026 14:49 #1
by Trony
Wiring Diagram
![Variable Gain Preamplifier with two jFET j.310 - LTspice [Free Download] - Forum - FusoElektronique](https://cdn.fusoelektronique.org/media/kunena/attachments/62/VariableGainPreamplifierwithtwojFETj.310-WiringDiagram.png "Variable Gain Preamplifier with two jFET j.310 - LTspice [Free Download] - Forum - FusoElektronique")
LTspice Frequency Response: 10Hz - 20Khz
![Variable Gain Preamplifier with two jFET j.310 - LTspice [Free Download] - Forum - FusoElektronique](https://cdn.fusoelektronique.org/media/kunena/attachments/62/VariableGainPreamplifierwithtwojFETj.310-LTspiceFrequencyResponse.png "Variable Gain Preamplifier with two jFET j.310 - LTspice [Free Download] - Forum - FusoElektronique")
LTspice FFT
![Variable Gain Preamplifier with two jFET j.310 - LTspice [Free Download] - Forum - FusoElektronique](https://cdn.fusoelektronique.org/media/kunena/attachments/62/VariableGainPreamplifierwithtwojFETj.310-FFT.png "Variable Gain Preamplifier with two jFET j.310 - LTspice [Free Download] - Forum - FusoElektronique")
Total Harmonic Distortion: 0.100090%(0.100089%)
Specifications
Supply Voltage: 20V
Current Consumption: 2.5mA
Variable Gain: from 6 to 40
Max Signal Input: 300mV p/p
Max Signal Output: 12V p/p
Frequency Response: 20Hz - 2Mhz
Output Signal Not Phased
Preamplifier taken from the Magazine Nuova Elettronica. Kit. LX.5016
Wiring Diagram
LTspice Frequency Response: 10Hz - 20Khz
LTspice FFT
Total Harmonic Distortion: 0.100090%(0.100089%)
Specifications
Supply Voltage: 20V
Current Consumption: 2.5mA
Variable Gain: from 6 to 40
Max Signal Input: 300mV p/p
Max Signal Output: 12V p/p
Frequency Response: 20Hz - 2Mhz
Output Signal Not Phased
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