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<li class="toctree-l2"><a class="reference internal" href="#output-control-regulation">Output Control &amp; Regulation</a>
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<li class="toctree-l2"><a class="reference internal" href="#power-sources">Power sources</a>
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<li class="toctree-l1"><a class="reference internal" href="../Temperature/">Temperature</a>
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<li class="toctree-l1"><a class="reference internal" href="../HardwareIssues/">Known Hardware Issues</a>
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<li class="toctree-l1"><a class="reference internal" href="../PowerSources/">Power sources</a>
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<li class="toctree-l1"><a class="reference internal" href="../Translation/">Translations</a>
@@ -266,6 +270,8 @@ Therefore the Pinecil and TS100 perform poorly when run off 12V power supplies a
<p>To measure the tip temperature in the iron, the iron has a small op-amp connected across the terminals at the cold end of the tip. This is setup to measure the voltage across the same terminals that are used to power the tip. In order to read the very small voltage generated by the <a href="https://ralim.github.io/IronOS/Temperature/">thermocouple cold junction</a>, the iron's output must be turned off for a moment.</p>
<p>Once the output is turned off (via the FET), the system has a recovery time as the tip capacitance discharges and the op-amp exits saturation. After this delay period, the MCU's ADC (analog-to-digital converter) samples the output of the op-amp 8 times quickly and then sets a flag to turn the PWM output back on.
This enforces a small dead time in the output signal while this occurs, so there is a balance between sampling the temperature often to maintain a stable tip temperature control and sampling less often to increase the maximum power deliverable to the tip (<a href="https://ralim.github.io/IronOS/Temperature/#complexity-of-measurement">see Complexity of measurement</a>).</p>
<h2 id="power-sources">Power sources</h2>
<p>Supported by IronOS hardware may use different power sources (chargers/powerbanks/battery packs) with different standards &amp; protocols (QC/PD/etc). For more information collected by the community on that, please, <a href="https://ralim.github.io/IronOS/PowerSources/">see the related documentation section</a>.</p>
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