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Forum Index : Microcontroller and PC projects : Simple quad-rail PSU....
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9610 |
I thought EVERYTHING could work with 274-X Gerbers!!!! 
Even the PCB houses all expect Gerbers, so surprising that Dex is being so un-co-operative. I expect there probably is a way - someone else may enlighten us both. I still have five or six boards here. If you want one, flick me a PM. Smoke makes things work. When the smoke gets out, it stops! |
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yahoo2 Guru  Joined: 05/04/2011 Location: AustraliaPosts: 1166 |
gerbers are a collection of vector shapes, there is no other information there. No program can reverse engineer the info that has been stripped away. They can be imported and edited graphically, that's about it. I'm sure this restriction would apply to all PCB design programs. I'm confused, no wait... maybe I'm not... |
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TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6284 |
@thirsty DEX links the PCB and the schematic so it would be unlikely that it can do anything with a bare PCB. Once you have created a component for the modules the curcuit is very simple so would be an easy learning exercise. You can then copy Grog's layout from the images he has posted. @Grog, I tend to use these fixed voltage devices but I notice that they are larger than your modules so I wont suggest that you drill a few mounting holes for them. 
They are available in many voltages. I will have to do as I suggested to thirsty and roll my own. At the moment, I have them swinging in free air from the 12V supply terminals. Jim VK7JH MMedit |
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| Phil23 Guru Joined: 27/03/2016 Location: AustraliaPosts: 1667 |
Well that would be for a very justifiable reason...... Air circulation around the device, Lol. That would be my excuse. |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9610 |
@ yahoo2 - okey dokey then. 
@ TassyJim - Yes, I have seen those encapsulated units on eBay, but never bought one. They too are a nice way to get several voltages. I wonder if they are just the same module as I am using, but set for whatever voltage, then encapsulated? I like the idea of a fully adjustable PSU though, cos then if I need 7.5v for example, I can adjust one of the rails on the PCB for that, and leave the 3v3 and 5v intact kind of thing. Each to their own. @ Phil23 - If you loaded up those encapsulated things to 3A they say they can handle, I wonder how hot they get..... Jim? Smoke makes things work. When the smoke gets out, it stops! |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6284 |
The most I have used them for is about 2 amps peak. When they are running 24x7 I go for less. I like them. Being encapsulated, there is no need to protect them from mouse piddle. I have had 2 fail. One when most things in the house went up in smoke due to the lightning strike and one recently for no apparent reason. Like most things ebay, I like to have spares and an easy way to change them. I do have the adjustable ones as well but for 3.3, 5 and 9V I use the fixed ones. Jim VK7JH MMedit |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9610 |
DO they get very hot at 2A? Smoke makes things work. When the smoke gets out, it stops! |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6284 |
They claim an efficiency of 96% so about 0.25W I did some tests when I first started playing with them but have lost the results. I will do some more tests when I get time but it will not be for a few days. Other events are getting in the way. But at 2A they do not get hot at all. I happily put them in a small case with a Raspberry Pi and a few other devices without any concerns. They draw about 11mA no load. VK7JH MMedit |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9610 |
Sweet.
Nice to know, if I ever decided to get any. Smoke makes things work. When the smoke gets out, it stops! |
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| paceman Guru Joined: 07/10/2011 Location: AustraliaPosts: 1329 |
These look pretty good too if you want AC input Victorinox. Silicon Chip has used them in two projects in the last two months, the Timer (Sept.'16) and the Energy Meter (Aug.'16). They're potted, selection of DC out, pretty small (24x29x14H), cheap-ish (A$13.27) and pin mount straight onto the board. Another option Grogs. Greg |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9610 |
Yes, those are especially cute. Smoke makes things work. When the smoke gets out, it stops! |
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