Electronics > Beginners
LAB POWER SUPPLY
jeroen79:
--- Quote from: rstofer on January 13, 2020, 08:52:43 pm ---In the uC world, you may find that both 3.3V and 5V are required simultaneously.
--- End quote ---
So instead of a switch you could use multiple bananajacks or bindingposts. One for each voltage plus common.
glinjik:
Y
--- Quote from: jeroen79 on January 14, 2020, 06:47:05 am ---
--- Quote from: rstofer on January 13, 2020, 08:52:43 pm ---In the uC world, you may find that both 3.3V and 5V are required simultaneously.
--- End quote ---
So instead of a switch you could use multiple bananajacks or bindingposts. One for each voltage plus common.
--- End quote ---
Hiya thanks yep that's kinda what I'm thinking now 3 jacks for each common pos neg with a simple switch on each set to turn that module on or off independent of each other but it would need a blocking diode on all terminals to prevent accidentally feeding one module into another I suspect that would create a nice meltdown :-DD
glinjik:
this is kinda what im liking although changing out the volt regs for appropriate ones
MarkF:
I built mine separate.
But, you could combine them into one case with one switch, one fuse and two transformers.
Each output rated for 1A.
You could also tap off the MC7805 regulator input with a 3.3V regulator for a fourth output.
glinjik:
--- Quote from: MarkF on January 14, 2020, 08:29:51 am ---I built mine separate.
But, you could combine them into one case with one switch, one fuse and two transformers.
Each output rated for 1A.
You could also tap off the MC7805 regulator input with a 3.3V regulator for a fourth output.
(Attachment Link)
--- End quote ---
i deffo like that diagram the only problem i have is the transformers do not have a centre tap so i guess 1 transformer for pos 1 for neg unless theres a way to do it without a centre tap? but in any case that would give me 19v+, 12v+- and the smps for 0-6v leaving 1 transformer spare the only thing is getting a neg volt from the smps and getting it to under 1v a challenge and no schematic for the smps :palm:
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