Maha MH-C9000 Disassembled

Here's the inside of the MH C9000 charger. It contains three subassemblies - the PCB, the LCD display and the one piece switch actuator:

thats it?.........hmmmmm, i feel ripped off now, i was expecting some Ram slots and a Hard drive...................thx for showing.

That's the way you make it.

Believe me, the fewer parts the better.

Counting the fully-populated PCB as a single part is...well, it's not the only way of counting "parts"...

uh......i was joking you know?........you do know right?...............LOL

Each slot has it's own separate switching power supply-very nice and exactly as it should be. Also, liberal use of ground planes and bypassing seems adequate. Looks like a few commodity ICs (opamps?) are on that board. Fine by me-using proven chips is always good. Seems to be a great design overall.

Can you show the other side of the LCD, you know... where the LIGHT EMITTER is?

This is the candle power forums, you know!

Mosfets are alot bigger than those in the BC-900. Which is good.

EngrPaul said:

Can you show the other side of the LCD, you know... where the LIGHT EMITTER is?

This is the candle power forums, you know!

Click to expand...

I didn't deem my other shots exciting enough for posting, but, if you insist:

Thanks ELM. It seems that Red/Black wire goes into some sort of thin white wafer. Hmmm.....

Sheesh. Haven't I done enough by ripping apart my new charger before using it even once so you can see it's guts? Now you want me to disembowel the display just so you can see where the wires go? I'd have to be crazy to do that.




It's pretty much your standard LCD "sandwich" - the liquid crystal display is mated against the driver/backlight (the white ceramic piece). There are about 24 contacts between the driver and LCD. But because the signals are multiplexed, only a pair of wires are required for the assembly itself. If this is all mumbo-jumbo sounding, you can search the web on how a liquid crystal display works.

Images not showing up for me. Could be my works blocking them though.

They show up for me

Can someone point me the heat sensors?

I also cant see the image.

Phatboyc said:

Can someone point me the heat sensors?

Click to expand...

I'm guessing TS1 - TS4 are the heat sensors (thermistors?)



If the images aren't showing up, just do a refresh and that should work. I don't have much bandwidth and my damn roomate spends 25 hours a day downloading DVD's. I've considered beating him to death, but have decided against it because:

1 - It's not right.
2 - I'd be the only suspect.
3 - I need his retirement check to help with the rent.

With firefox you will see the pictures, not with IE.
Download here

Anders

I'm using IE7 and am having no issues seeing all the pics.

EngrPaul said:

That's the way you make it.

Believe me, the fewer parts the better.

Click to expand...

I actually thought there would be less parts than what's shown. Not being familiar with the chargers features, I would expect that with this level of sophistication, it would also do my dishes :nana:

I would love to have seen a usb port installed, for firmware upgrades and pc monitoring of the charging cycle.

John.