https://community.element14.com/challenges-projects/element14-presents/dc-to-daylight/w/documents/27289/a-diy-current-source-demonstrating-ohm-s-law----dc-to-daylight-02en-USTelligent Community 12https://community.element14.com/challenges-projects/element14-presents/dc-to-daylight/w/documents/27289/a-diy-current-source-demonstrating-ohm-s-law----dc-to-daylight-02Wed, 17 Nov 2021 08:24:00 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:d8f96768-8a78-4583-8ab6-e4f87ae2e7dcMatthttps://community.element14.com/challenges-projects/element14-presents/dc-to-daylight/w/documents/27289/a-diy-current-source-demonstrating-ohm-s-law----dc-to-daylight-02#commentsCurrent Revision posted to Documents by Matt on 11/17/2021 8:24:00 AM<br /> <p><span><a href="https://www.youtube.com/watch?v=59B6Nsg403g">www.youtube.com/watch</a></span></p> <p style="margin:0;"></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#000000;font-family:&#39;Open Sans&#39;, Arial, sans-serif;text-align:justify;">In this episode, we take a look at the shortcomings of measuring low resistances with a standard digital multimeter. We demonstrate measuring a small resistance using both the two-wire and four-wire kelvin methods. Then we build a standalone current source that will be used in conjunction with a standard DMM, allowing us to make four-wire measurements, without an expensive benchtop meter.</span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/" data-e14adj="t"><img alt="element14 presents" src="/e14/assets/legacy/2021/e14PDCtoDaylight2021.png" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/" data-e14adj="t">element14 presents</a></span>&nbsp; <strong>|</strong> <a class="jive-link-wiki-small" href="/challengesprojects/element14-presents/vcp-program/w/documents/4139/vcp-biography-derek" data-e14adj="t">About Derek</a>&nbsp;&nbsp;<strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challenges-projects/element14-presents/dc-to-daylight/" data-e14adj="t">DC to Daylight</a></p> <p style="margin:0;"></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: resistance, resistance measurement, current, e14presents_derekbrodeur, ohms law, water circuit analogy, lm317 current source, current source, low resistance, ohm’s law, four-wire, voltage, kelvin, diy current source, measuring resistance, lm317</div> https://community.element14.com/challenges-projects/element14-presents/dc-to-daylight/w/documents/27289/a-diy-current-source-demonstrating-ohm-s-law----dc-to-daylight-02/revision/6Mon, 06 Feb 2023 13:48:08 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:d8f96768-8a78-4583-8ab6-e4f87ae2e7dctariq.ahmadhttps://community.element14.com/challenges-projects/element14-presents/dc-to-daylight/w/documents/27289/a-diy-current-source-demonstrating-ohm-s-law----dc-to-daylight-02#commentsRevision 6 posted to Documents by tariq.ahmad on 2/6/2023 1:48:08 PM<br /> <p><span><a href="https://www.youtube.com/watch?v=59B6Nsg403g">www.youtube.com/watch</a></span></p> <p style="margin:0;"></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#000000;font-family:&#39;Open Sans&#39;, Arial, sans-serif;text-align:justify;">In this episode, we take a look at the shortcomings of measuring low resistances with a standard digital multimeter. We demonstrate measuring a small resistance using both the two-wire and four-wire kelvin methods. Then we build a standalone current source that will be used in conjunction with a standard DMM, allowing us to make four-wire measurements, without an expensive benchtop meter.</span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2021/e14PDCtoDaylight2021.png" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong> <a class="jive-link-wiki-small" href="/challengesprojects/element14-presents/vcp-program/w/documents/4139/vcp-biography-derek">About Derek</a>&nbsp;&nbsp;<strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challenges-projects/element14-presents/dc-to-daylight/">DC to Daylight</a></p> <p style="margin:0;"></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: resistance, resistance measurement, current, e14presents_derekbrodeur, ohms law, water circuit analogy, lm317 current source, current source, low resistance, ohm’s law, four-wire, voltage, kelvin, diy current source, measuring resistance, lm317</div> https://community.element14.com/challenges-projects/element14-presents/dc-to-daylight/w/documents/27289/a-diy-current-source-demonstrating-ohm-s-law----dc-to-daylight-02/revision/5Tue, 23 Nov 2021 13:56:47 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:d8f96768-8a78-4583-8ab6-e4f87ae2e7dckellyhensenhttps://community.element14.com/challenges-projects/element14-presents/dc-to-daylight/w/documents/27289/a-diy-current-source-demonstrating-ohm-s-law----dc-to-daylight-02#commentsRevision 5 posted to Documents by kellyhensen on 11/23/2021 1:56:47 PM<br /> <p style="margin:0;"></p> <p><span><a href="https://www.youtube.com/watch?v=59B6Nsg403g">www.youtube.com/watch</a></span></p> <p style="margin:0;"></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#000000;font-family:&#39;Open Sans&#39;, Arial, sans-serif;text-align:justify;">In this episode, we take a look at the shortcomings of measuring low resistances with a standard digital multimeter. We demonstrate measuring a small resistance using both the two-wire and four-wire kelvin methods. Then we build a standalone current source that will be used in conjunction with a standard DMM, allowing us to make four-wire measurements, without an expensive benchtop meter.</span></p> <p style="margin:0;padding:0px;">&nbsp;</p> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2021/e14PDCtoDaylight2021.png" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong> <a class="jive-link-wiki-small" href="/challengesprojects/element14-presents/vcp-program/w/documents/4139/vcp-biography-derek">About Derek</a>&nbsp;&nbsp;<strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challenges-projects/project14/dc-to-daylight/">DC to Daylight</a></p> <p style="margin:0;"></p> </div> </div><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: resistance, resistance measurement, current, e14presents_derekbrodeur, ohms law, water circuit analogy, lm317 current source, current source, low resistance, ohm’s law, four-wire, voltage, kelvin, diy current source, measuring resistance, lm317</div> https://community.element14.com/challenges-projects/element14-presents/dc-to-daylight/w/documents/27289/a-diy-current-source-demonstrating-ohm-s-law----dc-to-daylight-02/revision/4Wed, 17 Nov 2021 17:40:24 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:d8f96768-8a78-4583-8ab6-e4f87ae2e7dckellyhensenhttps://community.element14.com/challenges-projects/element14-presents/dc-to-daylight/w/documents/27289/a-diy-current-source-demonstrating-ohm-s-law----dc-to-daylight-02#commentsRevision 4 posted to Documents by kellyhensen on 11/17/2021 5:40:24 PM<br /> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2021/e14PDCtoDaylight2021.png" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong> <a class="jive-link-wiki-small" href="/challengesprojects/element14-presents/vcp-program/w/documents/4139/vcp-biography-derek">About Derek</a>&nbsp;&nbsp;<strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challenges-projects/project14/dc-to-daylight/">DC to Daylight</a></p> <p style="margin:0;"></p> </div> </div> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"></p> <p><span><a href="https://www.youtube.com/watch?v=59B6Nsg403g">www.youtube.com/watch</a></span></p> <p style="margin:0;"></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#000000;font-family:&#39;Open Sans&#39;, Arial, sans-serif;text-align:justify;">In this episode, we take a look at the shortcomings of measuring low resistances with a standard digital multimeter. We demonstrate measuring a small resistance using both the two-wire and four-wire kelvin methods. Then we build a standalone current source that will be used in conjunction with a standard DMM, allowing us to make four-wire measurements, without an expensive benchtop meter.</span></p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: resistance, resistance measurement, current, e14presents_derekbrodeur, ohms law, water circuit analogy, lm317 current source, current source, low resistance, ohm’s law, four-wire, voltage, kelvin, diy current source, measuring resistance, lm317</div> https://community.element14.com/challenges-projects/element14-presents/dc-to-daylight/w/documents/27289/a-diy-current-source-demonstrating-ohm-s-law----dc-to-daylight-02/revision/3Wed, 17 Nov 2021 17:39:33 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:d8f96768-8a78-4583-8ab6-e4f87ae2e7dckellyhensenhttps://community.element14.com/challenges-projects/element14-presents/dc-to-daylight/w/documents/27289/a-diy-current-source-demonstrating-ohm-s-law----dc-to-daylight-02#commentsRevision 3 posted to Documents by kellyhensen on 11/17/2021 5:39:33 PM<br /> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2021/e14PDCtoDaylight2021.png" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong> <a class="jive-link-wiki-small" href="/challengesprojects/element14-presents/vcp-program/w/documents/4139/vcp-biography-derek">About Derek</a>&nbsp;&nbsp;<strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challenges-projects/project14/dc-to-daylight/">DC to Daylight</a></p> </div> </div> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"></p> <p><span><a href="https://www.youtube.com/watch?v=59B6Nsg403g">www.youtube.com/watch</a></span></p> <p style="margin:0;"></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#000000;font-family:&#39;Open Sans&#39;, Arial, sans-serif;text-align:justify;">In this episode, we take a look at the shortcomings of measuring low resistances with a standard digital multimeter. We demonstrate measuring a small resistance using both the two-wire and four-wire kelvin methods. Then we build a standalone current source that will be used in conjunction with a standard DMM, allowing us to make four-wire measurements, without an expensive benchtop meter.</span></p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: resistance, resistance measurement, current, e14presents_derekbrodeur, ohms law, water circuit analogy, lm317 current source, current source, low resistance, ohm’s law, four-wire, voltage, kelvin, diy current source, measuring resistance, lm317</div> https://community.element14.com/challenges-projects/element14-presents/dc-to-daylight/w/documents/27289/a-diy-current-source-demonstrating-ohm-s-law----dc-to-daylight-02/revision/2Wed, 17 Nov 2021 17:36:23 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:d8f96768-8a78-4583-8ab6-e4f87ae2e7dckellyhensenhttps://community.element14.com/challenges-projects/element14-presents/dc-to-daylight/w/documents/27289/a-diy-current-source-demonstrating-ohm-s-law----dc-to-daylight-02#commentsRevision 2 posted to Documents by kellyhensen on 11/17/2021 5:36:23 PM<br /> <div style="background:#ffffff;border:1px solid #dadada;margin:0;padding:14px 16px 16px 18px;vertical-align:top;"> <div style="display:inline-block;float:left;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2021/e14PDCtoDaylight2021.png" /></a></div> <div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">A DIY Current Source Demonstrating Ohm&#39;s Law</span> <p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong> <a class="jive-link-wiki-small" href="/challengesprojects/element14-presents/vcp-program/w/documents/4139/vcp-biography-derek">About Derek</a>&nbsp;&nbsp;<strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challenges-projects/project14/dc-to-daylight/">DC to Daylight</a></p> </div> </div> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="margin:0;"></p> <p><span><a href="https://www.youtube.com/watch?v=59B6Nsg403g">www.youtube.com/watch</a></span></p> <p style="margin:0;"></p> <p style="margin:0;padding:0px;">&nbsp;</p> <p style="background-color:#e9f6fc;border:1px solid #b8d7e5;margin:0;max-width:744px;padding:8px;"><span style="color:#000000;font-family:&#39;Open Sans&#39;, Arial, sans-serif;text-align:justify;">In this episode, we take a look at the shortcomings of measuring low resistances with a standard digital multimeter. We demonstrate measuring a small resistance using both the two-wire and four-wire kelvin methods. Then we build a standalone current source that will be used in conjunction with a standard DMM, allowing us to make four-wire measurements, without an expensive benchtop meter.</span></p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: resistance, resistance measurement, current, e14presents_derekbrodeur, ohms law, water circuit analogy, lm317 current source, current source, low resistance, ohm’s law, four-wire, voltage, kelvin, diy current source, measuring resistance, lm317</div> https://community.element14.com/challenges-projects/element14-presents/dc-to-daylight/w/documents/27289/a-diy-current-source-demonstrating-ohm-s-law----dc-to-daylight-02/revision/1Sat, 13 Nov 2021 03:58:40 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:d8f96768-8a78-4583-8ab6-e4f87ae2e7dctariq.ahmadhttps://community.element14.com/challenges-projects/element14-presents/dc-to-daylight/w/documents/27289/a-diy-current-source-demonstrating-ohm-s-law----dc-to-daylight-02#commentsRevision 1 posted to Documents by tariq.ahmad on 11/13/2021 3:58:40 AM<br /> <div style="background:#ffffff;padding:14px 16px 16px 18px;margin:0;vertical-align:top;border:1px solid #dadada;"><div style="float:left;display:inline-block;padding:0px 25px 8px 0px;"><a href="/challengesprojects/element14-presents/"><img alt="element14 presents" src="/e14/assets/legacy/2018/e14PresentsJune818.png" width="180px" /></a></div><div style="display:inline-block;vertical-align:top;width:70%;"><span style="font-size:18px;font-weight:bold;">A DIY Current Source Demonstrating Ohm&#39;s Law</span><p style="margin:0;"><span><a class="jivecontainerTT-hover-container jive-link-community-small" href="/challengesprojects/element14-presents/">element14 presents</a></span>&nbsp; <strong>|</strong> <a class="jive-link-wiki-small" href="/challengesprojects/element14-presents/vcp-program/w/documents/4139/vcp-biography-derek">Derek&#39;s VCP Profile</a>&nbsp; <strong>|</strong>&nbsp; <a class="jivecontainerTT-hover-container jive-link-community-small" href="/challenges-projects/project14/dc-to-daylight/">DC to Daylight</a></p></div></div><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;"></p><span><a href="https://www.youtube.com/watch?v=59B6Nsg403g">www.youtube.com/watch</a></span><p style="margin:0;"></p><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;border:1px solid #b8d7e5;background-color:#e9f6fc;padding:8px;max-width:744px;"><span style="color:#000000;font-family:&#39;Open Sans&#39;, Arial, sans-serif;text-align:justify;">In this episode, we take a look at the shortcomings of measuring low resistances with a standard digital multimeter. We demonstrate measuring a small resistance using both the two-wire and four-wire kelvin methods. Then we build a standalone current source that will be used in conjunction with a standard DMM, allowing us to make four-wire measurements, without an expensive benchtop meter.</span></p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: resistance, resistance measurement, current, e14presents_derekbrodeur, ohms law, water circuit analogy, lm317 current source, current source, low resistance, ohm’s law, four-wire, voltage, kelvin, diy current source, measuring resistance, lm317</div>