.:madworm:.'s photos

Experimental wire bending

Experimental wire bending

14 May 2012 159
Bad attempt

Bad attempt

14 May 2012 155
Please identify this

Please identify this

13 May 2012 167
What type / make / brand is this connector? It lives in my old Pentax S5z digital camera and I'd like to use it.
Li-Ion deep discharge experiment

Li-Ion deep discharge experiment

13 May 2012 172
I'm discharging these through a 169Ω resistor. Dumping them into the recycling container with some charge left is too dangerous.
A little BOMB - potentially

A little BOMB - potentially

13 May 2012 143
If these Li-Ion batteries were shorted out, you would probably end up with a bang. Each battery had a short-circuit current of about 10A! - although they wouldn't hold a useable charge anymore.
Li-Ion batteries

Li-Ion batteries

13 May 2012 140
Li-Ion - positive terminal

Li-Ion - positive terminal

13 May 2012 129
The outer shell is welded shut. No easy way to get to the Lithium.
Salvaged dual N-MOSFETs

Salvaged dual N-MOSFETs

13 May 2012 150
I removed these from old Li-Ion batteries. They were part of the protection circuit. The one on the right has more gate capacitor leakage. You can see the gate discharge within seconds. The other ones keep the charge much longer. Logic level, 30mΩ on-resistance, capable of a couple of Amps ;-)
Popped package

Popped package

13 May 2012 113
Li_Ion battery protection circuit.
Nude Godjira

Nude Godjira

11 May 2012 140
The top plastic cover doesn't come off easily. The bottom one knows how to be nice.
Probe GND to header

Probe GND to header

11 May 2012 158
No more of the dreaded 'click'.
Usual probe hook

Usual probe hook

11 May 2012 129
Probe hook and GND stuff

Probe hook and GND stuff

11 May 2012 165
Now the ground clip is useable.
GODJIRA

GODJIRA

11 May 2012 140
Feed me!
Recursion...

Recursion...

11 May 2012 135
Didn't test any of it

Didn't test any of it

11 May 2012 161
Blah blah blah, yak yak yak.
My improved ground clip vs. the standard one

My improved ground clip vs. the standard one

11 May 2012 144
I'm sure there are at least 10 reasons for subjecting me to an 'instant stoning', but the standard ground clip cables are way too short. Now I have a proper clip and can even plug it directly into 0.1-in headers. BTW: Jehovah!
Finally fixed

Finally fixed

11 May 2012 141
The solder job is not too brilliant. Too much insulation for a proper crimp. But it works. The shrinking tube helps too. I should like to find out where to get these clips. I have a feeling I might need more...
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