Discussion in 'Modding' started by RascalRusty, 25 Jul 2004.
oh, opps, are those them one then!!!
Are there any other ones on there that would be suitable??
Do you know if Rapid do Flip Flops too??? (not the ones for the beach!!!)
Hi again, just wonding, the input (and thus I presume the output is the same) of the Pic Im using is 5V, therefore if I use the 12V relays there will not be enough power. So will it be ok to use a 12v transformer, then use the 12 supply to operate the relay and then joint off the 12v line with resistor to knock down to 5v for the power of the pic.
If so, how do i go about this???
The PIC needs a regulated 5V supply (7805), don't even think about resistors to drop voltage.
It's a lot easier to just buy a 5V or even 6V relay and run everything from the regulated 5V supply, but a 9V transformer, after rectifying & smoothing, will give about 10.7V DC (or if you use schottky diodes in the rectifier bridge you'll get over 11.5V), should be enough for the relay and plenty of headroom for the regulator.
tinning is to ease soldering and prevent oxidation of the copper. It doesn't affect the current carrying ability at all
Of course it does. You're effectively doubling or tripling the cross sectional area of the conductor since solder is a conductor itself. It's a recognised technique and is used very widely in industry.
Tinning will of course also aid soldering but then again so will flux
RascalRusty: Why not just use the relay I previously recommended - Rapid Code: 60-0900
it depends on how thick you tin the copper. For a normal circuit you'd get from a PCB manufacturer, the tin layer is only about 10microns thick. You can leave it in tinning solution for longer and it will build up to greater thickness, but doesn't give anything like the same affect as widening the actual trace in the first place
I'd say it's pretty easy to apply a 1mm layer of solder, which would at least double the max current.
I wasn't talking about tin plating btw.
sorry to keep going on about these relays, but the ones you originally mentioned steveyg have been out of stock for a while now.
Do you know if RS components do any, cause I couldnt find any 6v ones but Im the worst searcher that ever lived. Would be good if they did cause I need to order a flip flop from there too and I can order as one then
The following should be ok to use from RS:
sorry to be a pain guys, but Im looking for some tranformers to power the PIXE now (5V from a 240v line), are these the ones to use Transformers
any help with the transformer??
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