Powering a breadboard
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Posted by Webb on June 1, 2006, 11:56 pm
Please log in for more thread options I am completely new to electronics and just picked up a breadboard. I have a 12 volt power supply with a 2.5mm plug that I want to connect to the breadboard. I went to Radioshack and found the salesperson was completely useless. With power supply in hand, I asked him what I would need to connect it to a breadboard and he said "what are you going to use as a power supply?" I'm assuming that I need a 2.5mm power jack but, I'm not sure how they work or if there is a certain type that I would need. The breadboard does have 3 binding posts if that helps. Can someone please help me here? Thanks, Webb | ||||||||||||||||||||||||||||||||||
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Posted by Bob on June 2, 2006, 12:56 am
Please log in for more thread options You could just cut the plug off of the power supply and attach the wires to the binding posts. What are you trying to do with the breadboard? Do you have a voltmeter? Do you have health insurance? Bob | ||||||||||||||||||||||||||||||||||
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Posted by Rheilly Phoull on June 2, 2006, 1:02 am
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Webb wrote: > I am completely new to electronics and just picked up a breadboard. I
> have a 12 volt power supply with a 2.5mm plug that I want to connect > to the breadboard. I went to Radioshack and found the salesperson was > completely useless. With power supply in hand, I asked him what I > would need to connect it to a breadboard and he said "what are you > going to use as a power supply?" > > I'm assuming that I need a 2.5mm power jack but, I'm not sure how they > work or if there is a certain type that I would need. The breadboard > does have 3 binding posts if that helps. Can someone please help me > here? > > Thanks, > Webb Well there are many ways! If you want the fast method, just cut off the output plug and connect the wires to the required binding posts. I assume you can check polarity with a VOM ? Perhaps a better way would be to mount a DC socket (that suits the output plug) into the breadboard and connect it to the posts underneath the breadboard (Once again check polarity). You will have to find somewhere or someone with practical experience for buying parts. Lots of luck with your learning, you will get help here if you make an effort yourself. -- Regards ......... Rheilly Phoull | ||||||||||||||||||||||||||||||||||
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Posted by on June 2, 2006, 4:58 am
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>I am completely new to electronics and just picked up a breadboard. I
>have a 12 volt power supply with a 2.5mm plug that I want to connect to >the breadboard. I went to Radioshack and found the salesperson was >completely useless. With power supply in hand, I asked him what I >would need to connect it to a breadboard and he said "what are you >going to use as a power supply?" >I'm assuming that I need a 2.5mm power jack but, I'm not sure how they
>work or if there is a certain type that I would need. The breadboard >does have 3 binding posts if that helps. Can someone please help me >here? Bring your 2.5mm plug to the shop. Ask for a matching jack. Solder two wires on this jack and connect to the binding posts. Next time bring photo urls so we easier can get a grip on what you have. ;) | ||||||||||||||||||||||||||||||||||
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Posted by Chris on June 2, 2006, 6:42 am
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Webb wrote: > I am completely new to electronics and just picked up a breadboard. I
> have a 12 volt power supply with a 2.5mm plug that I want to connect to > the breadboard. I went to Radioshack and found the salesperson was > completely useless. With power supply in hand, I asked him what I > would need to connect it to a breadboard and he said "what are you > going to use as a power supply?" > > I'm assuming that I need a 2.5mm power jack but, I'm not sure how they > work or if there is a certain type that I would need. The breadboard > does have 3 binding posts if that helps. Can someone please help me > here? > > Thanks, > Webb Hi, Webb. You've got a good start here. I've got to assume you've also got some kind of voltmeter, too. You can get a digital multimeter (DMM) for less than $12 just about anywhere. I'm also assuming you've got access to some 24AWG or 22AWG solid conductor wire, and a wire stripper. (Hint: look around for some older 4-conductor phone wire -- it's got 24AWG solid, and is great for breadboards). Now the binding posts on the top of the breadboard can accept banana jacks, but you can also unscrew them to reveal a couple of holes in the metal center of the post. With the 12V supply unpowered, curt off the plug at the end, and strip off about an inch of insulation. Then cut a couple of lengths of the 24AWG solid wire, and strip off an inch or so of insulation on each end. Now, for both conductors from the wall wart, twist together the stranded wite and one of the solid wires. Insert the two wires into the binding post, and screw the binding post down on the two wires. You've now made a connection between the power supply and the jumper wires. Briefly plug in the wall wart, and see that the red binding post has the + end and the black the - end. Unplug the wall wart. If your polarity is reversed, turn 'em around. Now you can finish. Route the + wire to the top row of the protoboard, strip off 1/2" of wire, and insert the wire into any of the holes in the top row (the horizontal row of holes in the top rows are connected together). Do the same for the - wire and the bottom row of holes. Now you've got + on the top horizontal row, and - on the bottom horizontal row. This should be sufficient for you to get started. The reason you've got three posts is if you wanted a split supply (say, +/-12V). Typically, the topmost row is +, the bottom-most row is -, and the two other horizontal rows are common. This is the easiest and most common way to hook up a protoboard with split supplies. Here's a good educational link showing some protoboard basics: http://www.uml.edu/Dept/EE/EASNE/2s1.htm Good luck with your studies! Cheers Chris | ||||||||||||||||||||||||||||||||||
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> have a 12 volt power supply with a 2.5mm plug that I want to connect to
> the breadboard. I went to Radioshack and found the salesperson was
> completely useless. With power supply in hand, I asked him what I
> would need to connect it to a breadboard and he said "what are you
> going to use as a power supply?"
>
> I'm assuming that I need a 2.5mm power jack but, I'm not sure how they
> work or if there is a certain type that I would need. The breadboard
> does have 3 binding posts if that helps. Can someone please help me
> here?
>
> Thanks,
> Webb
>