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Tech Head - The Technology Section
The Work Bench and Soldering Station
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<blockquote data-quote="Vipersan" data-source="post: 913906" data-attributes="member: 325666"><p>Ok ...</p><p>for anyone planning to create something similar by utilising Gbox innards..</p><p>This is important..</p><p>Yes you still need a smooth isolated 5v supply for the micro etc...</p><p>but you also need a 12v supply ..</p><p>I've found out that the relays will not function at 5v ...</p><p>Simply not enough volts and the 12v supply for the relays is used _before_ the regulated reduction to 5v ...</p><p>So ..</p><p>I will still be using a seperate negative rail isolated supply to drive a 7805 ...but instead of fitting a seperate 5V supply ..I will have to fit a seperate isolated 12v supply ..and still employ a 5V regulator to further reduce the 12V to 5V</p><p>Alternatively I _could_ start replacing the relays ...but too much work fwiw..</p><p>rgds</p><p>VS</p></blockquote><p></p>
[QUOTE="Vipersan, post: 913906, member: 325666"] Ok ... for anyone planning to create something similar by utilising Gbox innards.. This is important.. Yes you still need a smooth isolated 5v supply for the micro etc... but you also need a 12v supply .. I've found out that the relays will not function at 5v ... Simply not enough volts and the 12v supply for the relays is used _before_ the regulated reduction to 5v ... So .. I will still be using a seperate negative rail isolated supply to drive a 7805 ...but instead of fitting a seperate 5V supply ..I will have to fit a seperate isolated 12v supply ..and still employ a 5V regulator to further reduce the 12V to 5V Alternatively I _could_ start replacing the relays ...but too much work fwiw.. rgds VS [/QUOTE]
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Tech Head - The Technology Section
The Work Bench and Soldering Station
V-Box blew up :(
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