Petr Malanik
3 years ago
parent
a7c70f83db
commit
576f148910
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{
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"metadata": {
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.8.10"
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},
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"orig_nbformat": 4,
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"kernelspec": {
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"name": "python3",
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"display_name": "Python 3.8.10 64-bit"
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},
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"interpreter": {
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"hash": "31f2aee4e71d21fbe5cf8b01ff0e069b9275f58929596ceb00d14d90e3e16cd6"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 2,
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"cells": [
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{
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"cell_type": "code",
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"execution_count": 2,
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"metadata": {},
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"outputs": [
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{
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"output_type": "stream",
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"name": "stdout",
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"text": [
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"--------------------------------------------\nIdeal resistor: 0.0132R\nPower loss: 0.33W\n"
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]
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},
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{
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"output_type": "error",
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"ename": "IndexError",
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"evalue": "Replacement index 0 out of range for positional args tuple",
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"traceback": [
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"\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
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"\u001b[0;31mIndexError\u001b[0m Traceback (most recent call last)",
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"\u001b[0;32m/tmp/ipykernel_112179/3645271640.py\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[1;32m 14\u001b[0m \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"Ideal resistor: {}R\"\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mformat\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mideal_resistor\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 15\u001b[0m \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"Power loss: {}W\"\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mformat\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mpower_loss\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 16\u001b[0;31m \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"Resolution: {}A\"\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mformat\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m 17\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
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"\u001b[0;31mIndexError\u001b[0m: Replacement index 0 out of range for positional args tuple"
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]
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}
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],
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"source": [
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"max_sense_voltage = 3.3\n",
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"max_output_current = 5.0\n",
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"adc_resolution = 4096\n",
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"\n",
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"max_acceptable_power_loss = 0.1\n",
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"\n",
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"amp_ratios = [50,100,200]\n",
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"\n",
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"for ratio in amp_ratios:\n",
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"\n",
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" ideal_resistor = max_sense_voltage/ratio / max_output_current\n",
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" power_loss = ideal_resistor * max_output_current**2\n",
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" resolution = \n",
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" print(\"--------------------------------------------\")\n",
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" print(\"Ideal resistor: {}R\".format(ideal_resistor))\n",
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" print(\"Power loss: {}W\".format(power_loss))\n",
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" print(\"Resolution: {}A\".format())\n",
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"\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 14,
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"metadata": {},
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"outputs": [
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{
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"output_type": "stream",
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"name": "stdout",
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"text": [
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"Length: 1.1136363636363635\nWraps: 16.880069721867685\n"
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]
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}
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],
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"source": [
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"import math\n",
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"\n",
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"bat_diameter = 21\n",
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"wrap_length = bat_diameter * math.pi / 1000\n",
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"heating_power = 2\n",
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"voltage = 3.5\n",
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"wire_resistance = 5.5 # per meter\n",
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"\n",
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"current = heating_power / voltage\n",
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"resistance = voltage / current\n",
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"length = resistance / wire_resistance\n",
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"wraps = length / wrap_length\n",
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"\n",
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"print(\"Length: {}\".format(length))\n",
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"print(\"Wraps: {}\".format(wraps))\n",
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"\n",
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"\n",
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"\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": []
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}
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]
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}
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