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Voltage Divider Calculator

Haha...that's the same calculator I used...because I'm math lazy Actually, I'm not really that worried about a 2V difference, but I was doing it for posterity because the kit is only "rated for 16v". Interesting enough, I originally was using much lower value resistors rated at 1/4 watt, but they couldn't handle the current draw & started smoking. So the values I ended up using were the 1/2 watt ones I had on hand that would achieve the same voltage according to the calculator. Looking at the simple scematic (I'll post it after I scan it in the morning), it does look like the transistor is latched on while power is applied, so I think you're right about the current draw being potentially fairly high. As I'm typing this, I'm thinking, "No shit, dumbass...if the 1/4 watt resistors smoked the current draw is higher than you thought".

Anyway, I'll post the schematic...

<blockquote data-quote="Moleculo" data-source="post: 151801" data-attributes="member: 1"><a href="http://www.raltron.com/cust/tools/voltage_divider.asp" target="_blank">Voltage Divider Calculator</a>&nbsp; &nbsp;Haha...that&#039;s the same calculator I used...because I&#039;m math lazy <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f609.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=";)" title="Wink&nbsp; &nbsp; ;)"&nbsp; data-smilie="2"data-shortname=";)" />&nbsp; Actually, I&#039;m not really that worried about a 2V difference, but I was doing it for posterity because the kit is only &quot;rated for 16v&quot;.&nbsp; Interesting enough, I originally was using much lower value resistors rated at 1/4 watt, but they couldn&#039;t handle the current draw &amp; started smoking.&nbsp; So the values I ended up using were the 1/2 watt ones I had on hand that would achieve the same voltage according to the calculator.&nbsp; Looking at the simple scematic (I&#039;ll post it after I scan it in the morning), it does look like the transistor is latched on while power is applied, so I think you&#039;re right about the current draw being potentially fairly high.&nbsp; As I&#039;m typing this, I&#039;m thinking, &quot;No shit, dumbass...if the 1/4 watt resistors smoked the current draw is higher than you thought&quot;.&nbsp;Anyway, I&#039;ll post the schematic...</blockquote>

[QUOTE="Moleculo, post: 151801, member: 1"] [url=http://www.raltron.com/cust/tools/voltage_divider.asp]Voltage Divider Calculator[/url] Haha...that's the same calculator I used...because I'm math lazy ;) Actually, I'm not really that worried about a 2V difference, but I was doing it for posterity because the kit is only "rated for 16v". Interesting enough, I originally was using much lower value resistors rated at 1/4 watt, but they couldn't handle the current draw & started smoking. So the values I ended up using were the 1/2 watt ones I had on hand that would achieve the same voltage according to the calculator. Looking at the simple scematic (I'll post it after I scan it in the morning), it does look like the transistor is latched on while power is applied, so I think you're right about the current draw being potentially fairly high. As I'm typing this, I'm thinking, "No shit, dumbass...if the 1/4 watt resistors smoked the current draw is higher than you thought". Anyway, I'll post the schematic... [/QUOTE]

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