Seperate Voltages

demonofaj · Post by **demonofaj** » Sat Jun 25, 2005 1:51 pm

Im working on a portable using a Sega Genesis. But my LCD has a weird function, it has no on and off switch. To turn it on, plug in the battery and to turn it off, remove the battery. If anyone has any suggestions on how to sync the Genesis and the LCD into one power switch it would help thanks. Its annoying to plug in a battery just to turn on a portable.

nos_slived · Post by **nos_slived** » Sat Jun 25, 2005 2:02 pm

Use either a DPDT, or use the same power source for both the screen and system.

demonofaj · Post by **demonofaj** » Sat Jun 25, 2005 2:45 pm

can you elaborate on that

nos_slived · Post by **nos_slived** » Sat Jun 25, 2005 2:49 pm

What don't you get about that?

demonofaj · Post by **demonofaj** » Sat Jun 25, 2005 3:25 pm

I mean what is a DPPT

demonofaj · Post by **demonofaj** » Sat Jun 25, 2005 3:25 pm

nos_slived wrote:Use either a DPDT, or use the same power source for both the screen and system.

sry for the misspelling, i meant wat is a DPDT

daguuy · Post by **daguuy** » Sat Jun 25, 2005 3:33 pm

DPDT is a switch that can switch 2 lines at once. you can usually find them in old computers or computer parts or a store

nos_slived · Post by **nos_slived** » Sat Jun 25, 2005 5:21 pm

Use the edit button. You don't need to make a new post about making a typo. Do a Google image search for DPDT. There are 2 rows of 3 pins:

Code: Select all

|         |        |
1         2        3
4         5        6
|         |        |

Pin#: - Connected to
1 - Genesis (positive power in)
2 - Battery for Genesis (positive)
3 - NOT CONNECTED
4 - Screen (positive power in)
5 - Battery for Screen (positive)
6 - NOT CONNECTED

Connect the screen ground to the screen's battery's ground. Do the same with the Genesis and it's battery's ground.

Turbo Tax 1.0 · Post by **Turbo Tax 1.0** » Sat Jun 25, 2005 5:23 pm

its not to weird that your switch has no power switch the psone screens also have no power switch

daguuy · Post by **daguuy** » Sat Jun 25, 2005 5:27 pm

nos_slived wrote:There are 2 rows of 3 pins:

hhhhhhhhhhmmmmmmmmmmmm............................ that's wierd, the ones i found have 4 terminals but i guess they do the same thing... if you have a busted N64 (it's the only one i know the most about but there are probably others) it's power switch can switch 4 lines at once

demonofaj · Post by **demonofaj** » Sun Jul 10, 2005 8:02 pm

notice the 'unconnected' pins in the diagram, well i plan to add a charge jack (with Ni-MH, DUH); which brings of the question that would it work.

nos_slived · Post by **nos_slived** » Sun Jul 10, 2005 11:32 pm

If it is for charging the battery while the genesis and screen are off, connect the possitive to pin 3 if it is to charge the genesis, and pin 6 if it is to charge the screen.

demonofaj · Post by **demonofaj** » Mon Jul 11, 2005 8:40 am

Thats a rather huge nuisance, but I guess I can compormise, better than nothing.

nos_slived · Post by **nos_slived** » Mon Jul 11, 2005 1:33 pm

Crop that avatar.

daguuy · Post by **daguuy** » Mon Jul 11, 2005 1:45 pm

that's your 2nd huge avatar

if you want an avatar that's too big, resize it before using it