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DIY For Audio
Questions about PCB's, power rectification, etc.
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<blockquote data-quote="u235" data-source="post: 236753" data-attributes="member: 1485"><p>I am busy building a power-supply board - 6v, 12v and 240ac off the same board. This is the first step in the long rod to building the internals for the uberamp. Can someone out there please answer a couple of questions for me?"</p><p></p><p>a) What is a simple way to transfer a paper design onto a blank PC board (not strip board)?</p><p>b) Is there any reason why a valve amplifier should not also be built on a PC board? The valve preamp that Rudi did for me is on a PCB, but all the designs for power amps that I have seen use point-to-point wiring, which to my eye looks messy.</p><p>c) I have found a latching relay (called an impulse relay actually) that switches on 240v from a 12v impulse. It is the same sort as used in garage doors, booms, etc. Anyone have any experience with these?</p><p>d) how can I calculate the size of capacitor that I need on my rectified outputs, 6v and 12v?</p><p>e) What is the point of a capacitor in series with a resistor, in parallel with the rectified power outputs? Do I need this arrangement? If so, how can I calculate the right values?</p><p></p><p>Thanks in advance!</p></blockquote><p></p>
[QUOTE="u235, post: 236753, member: 1485"] I am busy building a power-supply board - 6v, 12v and 240ac off the same board. This is the first step in the long rod to building the internals for the uberamp. Can someone out there please answer a couple of questions for me?" a) What is a simple way to transfer a paper design onto a blank PC board (not strip board)? b) Is there any reason why a valve amplifier should not also be built on a PC board? The valve preamp that Rudi did for me is on a PCB, but all the designs for power amps that I have seen use point-to-point wiring, which to my eye looks messy. c) I have found a latching relay (called an impulse relay actually) that switches on 240v from a 12v impulse. It is the same sort as used in garage doors, booms, etc. Anyone have any experience with these? d) how can I calculate the size of capacitor that I need on my rectified outputs, 6v and 12v? e) What is the point of a capacitor in series with a resistor, in parallel with the rectified power outputs? Do I need this arrangement? If so, how can I calculate the right values? Thanks in advance! [/QUOTE]
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DIY For Audio
Questions about PCB's, power rectification, etc.
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