benheck.com Forums

as far as i know, the voltage rating on caps is irrelevant

since this is a switching regulator, it has a built in oscillator--the external circuitry is necessary in order to control the rate of the switching cycle--hence control the output voltage. Larger caps take longer to charge up than ...

I noticed that your output cap is 63V 68 uF--is your input cap have a lower or
higher rating than 63V? If so, it might be that when you put a load on this setup, one of the two caps has too high of a voltage rating. If you look at the testing setup in the documentation for this regulator, the input ...

You can cut into the grounding strip. You could also remove the grey audio/video interface and the white controller interface to make the board slimmer. I chose not to remove the grounding strip because the holes in it provided a good place to put the mounting screws--the only side effect is your ...

You play Earthbound, therefore, you rock! Are you in the PKHack forums?

I've been to them, but I haven't posted to them.

I think that Earthbound is the bench mark of RPG. Even with cheezy graphics and music, lack of violence, and political correctness--I am mysteriously drawn towards its wit.

I ...

One could also just bypass the sound card issue by using a 1992 or newer SNES. They don't have the sound circuits hanging off of the mainboard.

Don't mean to sound like a smart-ass, but that was what I did in my second SNESp.

I bought the console on ebay. Unfortunately, I did not have that info ...

Ah, thanks. That answered a lot of my questions. This one supposedly works form 6.5v up. The different part number also expained the DIP-8 package.

The inductor partnumber was wrong it should be: (895-6128) I think the other part number was a 0.47 uh inductor, which is wrong.

Cb = 0.01 uF 50V ...

Hm.. I'm confused. From the new pictures you added, it looks like an LM2677.

It is a LM2672--use http://www.national.com/ds/LM/LM2672.pdf

But the min input voltage is 8v, isn't that li-ion battery 7.5 or whatever?

I tested the unit on my breadboard--it will work at 7.5 V/7.2 V--just keep the ...

I'm interested in how you made the switching regulator for the 5v line. All I could see was an 8pin DIP... How could a switching reg. be integrated into such a small package? I was considering a MAX787 for mine but it needs too many passive components. (Inductors are also a pain to get.)

So, how ...

Dubs wrote:Did you take the audio of the main board or the smaller one?

I got the audio of the main board. I believe pins 11, 12 are the left and right channels.

i have a question about the original snes board
how do you desolder the expansion slot

Since you won't need to save the expansion slot adapter--you can destroy it. I used solder wick to remove as much solder as I could from the back of the adapter. If you cut away the plastic housing on the ...

did you do the LED mod?
If so then how would you connect the ps1 screen if you didnt do the LED Mod (pic?) Thanks a lot !!!!

I did the LED mod. I also recently added a switching regulator (it improved the battery consumption somewhat) as an exercise.

The screen hooks up the same whether you ...

Just go to my last post for pictures:

Progress report: SNES portable using the old 1990 SNES

I decided to go with a GBO design, because the size of the older snes board makes it impossible to make it as "compact" as ben's design, however--if you look at the side view of my machine, you can see ...

Why Does it have R and X on the sides? I assume they are speaker holes, but why the R and X? And where does the battery go?


They are the initials for my two sons--Ryan and Xander (X is still on the way).

The battery currently is an external NiCad because it won't fit between the space between ...

did you cut down the snes board??
cause i was making a snesp but then my snes mini got fried so im thinking of making one with the orig. snes

The main differences between the mini board vs the original board:

1. The original board has only one big capacitor--all of the other caps are aluminum ...