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Thank you Frank - you're a gentleman. And in Southampton too - what are the chances? - I'm in Bitterne! Now, great point about the 12v indicator for the ATX; I'm cool about the heatsinks (...) and the voltage drop over D3 and I'll have a go with the component ratings - but I'm lost at the bit...
Hi All,
I'm a newbie here and to electronics generally tbh. I'm hoping to design a SSR-switched circuit to switch quickly between a mains-driven 500W 12v supply (utilising an ATX PSU) and a couple of big 12V deep-cycle batteries in parallel to create a sort of UPS, favouring mains but with the...
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