Build Your Own Arcade Controls Forum
Main => Everything Else => Topic started by: david656 on July 01, 2008, 08:10:28 pm
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im doing a little project and need to step down 9v DC from the wall to 3v DC... what would i use to create this effect ?
and how do i wire 2 seperate 9DC things to the same DC plug/transformer? do you do it in series or parallel or ?
any insight would be great !
thanks
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2 separate devices to one power supply? Parallel. Just be sure that the current rating on the PS will handle both devices.
9 to 3v? http://www.dimensionengineering.com/DE-SW033.htm is a hybrid switching reg - in a 78XX footprint. It'll handle up to 1A at 3.3v.
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I take it you are using a 9v DC 'plug' PSU? Why not just get a 3v one? [Here's one (http://www.maplin.co.uk/Module.aspx?TabID=1&ModuleNo=19160&doy=2m7)] from Maplins for £6.
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if i got another lead/ transformer it would just be taking up more room in a confined area :-( and therefore not reallly a option ! if worst comes to the worst im gunna have to use batteries which will run down in no time :-(
can i not use a load of resistors or summit !?
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what the bloody hell are you up to??
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ha ha ! its not what you think ! :timebomb:
my amstrad cpc464 died and i have took it apart and re wired the tape drive to play stereo audio tapes and am planning on shuvving a windows PC maybe nano ITX or pico ITX in there BUT to get the tape drive to work with out the amstrad boards i hacked a walkman into it ! but obviously the batteries would die quick so need to DC mains power it ! and the tape motor seems to be 9v as is the other amp ! but the walkmans 3v ??? :(
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can i not use a load of resistors or summit !?
Sure, as long as the current drawn never changes, and you don't mind things getting hot enough to melt plastic...