Recent content by Frank4d

If you want to know how many 100 watt lights are turned on (without caring about actual watts) you could use a part like LM3914. You would need a circuit that rectifies AC to DC and possibly amplifies/divides it so the DC iutput to the LM3914 drives one output per 100 watt lamp.

The way I wired it, described in post #2, doesn't have a power switch. It turns on with the PSU.

I needed -12 volts @ 2.1 amps for three synchro-to-digital and digital-to-RVDT cards at work (avionics electronics lab stuff you don't see with most other off the shelf PCI cards) so I came up with the DC-DC converter solution. The isolated DC-DC converter allows powering the input with any...

No way to do it without very extensive mods to the PSU. But I had a PC at work that needed -12V @ 2 amps for some PCI boards that were installed. I bought a 12 volt 30 watt DC-DC converter with isolated (important) output. I wired the inputs to the PSU +12 volt output, and the + output to PSU...

If you want it etched ir engraved, check with the school machine shop. If silkscreen printed, does the school have an art department or one that does signs?

It works and is safe to do so long as those are the only connections between the two PSUs. As matrix563 posted, adapters are available to avoid cutting into the PSU cables. Or if you are comfortable with doing so, you get to keep $5-$10. A disadvantage of using a toggle switch is you would...

One way is to remove the toggle switch on the stereo PSU. Then splice the green wire on the stereo PSU to the green wire from the PC. And splice the black wire on the stereo PSU to a black wire on the PC. The power button on the PC will turn them both on and off.

You can use something like a 0.01 ohm shunt. Then amplify the voltage across it if needed using an INA168NA shunt resistor amplifier (a resistor to ground determines the gain).

There are only so many ways to wire up LEDs, fans and switches that is not covered in previous threads. So we are out of fresh material here.

Have a look at sime LCD panel controller cards here: http://www.digitalview.com/controllers/products.php/ Here is a connection diagram for one of them to your LCD panel model: http://www.digitalview.com/diagrams/ACG1024-4167202-00_Sharp_LQ10D421.VGA.PDF

Electrical engineer here. You appear to have a flat panel display that has 6 bit red, green, and blue data inputs and horizontal and vertical sync. I am guessing you want to interface it to a VGA or DVI card in a PC?. Without the hardware and firmware that goes in between, it wont work.

You could use a power monitoring meter such as the ones shown here: http://electroindustries.com/products_page.html I am using the Nexus 1250 f to monitor 115VAC 400Hz power usage for a project at work. But you are looking at $2000 to $4000.:eek:

Unless the battery is installed and there are electrolytes (such as are found in laundry detergent) in the water. Then galvanic corrosion occurs and the cell phone or iPod is toast.

http://newark.com http://digikey.com

Once I shorted a 5 volt, 120 amp PSU with my wedding ring. Got a nice 3rd degree burn from it.