r1_r2_r3.ngjs

#!/usr/bin/env ngspicejs
// Changing R1 and R2 and R3 measure gain, current and thd and find the best score
// linter: ngspicejs-lint
"use strict";

// emitter follower
var ef = include('emitter_follower.ngjs');

// gain is <1 but we need at least 0.9
var score_gain = lerp([['0.9m', 0], [1, 1]]);
// current should be smallest but must be below 1mA
var score_current = lerp([['0.1m', 1], ['1m', 0]]);
// thd should be smallest and must be below 0.02
var score_thd = lerp([[0, 1], [0.02, 0]]);

var all = [], c = 20000;
//series_e3('1k', '100k').forEach(c => {
    series_e3('1k', '10M').forEach((a) => {
        series_e3('1k', '10M').forEach((b) => {
            ef.r1.r(a);
            ef.r2.r(b);
            ef.r3.r(c);
            var t = tran().run();
            var gain = t.gain('V(2)', 'V(6)');
            var current = -t.avg('I(U2)');
            var thd = fft().run('V(6)').thd(ef.u1.attr.f);
            var score = 5 * score_gain.get(gain) + 10 * score_current.get(current) + score_thd.get(thd);

            if (gain <= 0.7) {
                return;
            }
            if (thd > 0.005) {
                return;
            }
            if (current > 0.0004) {
                return;
            }
            echo(
                'R1', a.toEng(),
                'R2', b.toEng(),
                'R3', c.toEng(),
                'Gain', gain.toEng(),
                'Current', current.toEng(),
                'THD', thd.toFixed(6),
                'score', score.toFixed(3)
            );
            all.push({r1: a, r2: b, r3: c, gain, current, thd, score});
        });
    });
//});
echo('Best (R1, R2, R3, gain, current, thd, score):');
all.sort((a,b) => {
    return b.current - a.current;
}).forEach((a) => echo(a.r1, a.r2, a.r3, a.gain.toFixed(6), a.current.toFixed(6), a.thd.toFixed(6), a.score.toFixed(3)));