how_to_use_ammeter.ngjs

#!/usr/bin/env ngspicejs
// How to use ammeter
// linter: ngspicejs-lint
"use strict";

sinewave('U1', 1, 0).v(5).f(5000);
resistor('R1', 1, 2, 1000);
capacitor('C1', 2, 3, '100n');
ammeter('A1', 3, 0);

// basic tran of ammeter current
var t = tran().step('10u').interval('1m').run().chart('I(A1)');

// measure ammeter current at time 1ms
echo('I@1ms', t.value_at('I(A1)', '1m').toEng());

// measure rms current
echo('Irms', t.data['I(A1)'].rms().toEng());

// show AC of ammeter current
var a = ac().run().chart('I(A1)');

// use AC to measure current at 5kHz
echo('Iac@5kHz', a.value_at('I(A1)', '5k').toEng());

// fft of ammeter current
fft().run('I(A1)').chart();