mosfet_n_10x_amplifier.ngjs

#!/usr/bin/env ngspicejs
// N-channel mosfet 10x amplifier with high inductance source, 50k load and reasonably flat AC
// linter: ngspicejs-lint
"use strict";

battery('U1', 1, 0, 9);
resistor('R1', 1, 7, '10M');
resistor('R2', 7, 0, '10M');
capacitor('C1', 5, 7, '100n');
pickup_singlecoil('L1', 5, 0).v(0.1).f(196);
resistor('RD', 1, 2, '6k8');
resistor('RS', 3, 0, '3k3');
capacitor('C3', 3, 9, '47u');
resistor('R3', 9, 0, '510');
capacitor('C2', 2, 6, '4u7');
resistor('R4', 6, 0, '50k');
mosfet_n('T1', 2, 7, 3, 'BS170');
capacitor('C8', 7, 10, '100p');
resistor('R8', 10, 0, '300k');

ac().run().chart('V(6)');

var t1 = tran().run();
echo('gain:', t1.gain(5, 6).toEng());

battery_sensitivity('U1', 5, 6, 0, 15).run().chart().last_chart.gif('bat_sens_mosfet_10x_amp.gif');