Electronics

scotthr · Joined: 02 Dec 2006 Posts: 6

Hello; My dad was jet electronics dude in the navy, I however, am lost, being color blind doesn't help when experimenting either....

Can somebody help me out with a solution to my problem. I will gladly
pay for your services with either cash, or barter.

I need a schematic and parts list w/partnumbers for a way to make an
opamp do the following:

1. take a low voltage single ended + 0-5vdc input and scale it down to
+0-2vdc for a panel meter and scale it up to 0-10VDC for use in our
new hvac system. It should have the ability to calibrate both offsets
with a ? maybe variable resistor? not sure.

2. take a low mv single ended input and scale it up to output at
0-2, 0-5 and 0-10 +vdc

3. take a low mv differential input and scale it up to output at
0-2, 0-5, and 0-10 +vdc

4. A "isolated?", regulated 18VDC power supply that can handle
2Amps

Can somebody help me with either schematics and parts and or where I
can buy these items. I can solder real good and have lots of stuff I can
play with, I just need this so I can learn why it works. I will never get this from a book, already tried and lost most my hair

neon · Joined: 25 Feb 2006 Posts: 594

i CAN HELP WITH THAT I am not sure that i want payment for something that simple and one shot item. If you want finaly you can give me whatever you think that was worth to you. Now i have questions you requirements are not exactly what i am used to it +0-5v input. it should maybe as follows 0 to -5v or is it 0 to +5v. there is no mathematics that tells me +0 zero has no direction 0 zero is nothing. so revamp your request as follows 0 to + or - 5v, output 0 to 10v and finaly is it AC or DC input. Providing a work statement will save you and us a lot of headhaches.take care

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