.:madworm:.'s photos with the keyword: power

Hydroelectric power plant

Hydroelectric power plant

.:madworm:.
30 Oct 2018 1 2 138
Hydroelectric power plant

Hydroelectric power plant

.:madworm:.
30 Oct 2018 1 1 149
Hydroelectric power plant

Hydroelectric power plant

.:madworm:.
30 Oct 2018 1 138
Electrical Power Ratings

Electrical Power Ratings

.:madworm:.
02 Jul 2015 87
Please identify this

Please identify this

.:madworm:.
13 May 2012 92
What type / make / brand is this connector? It lives in my old Pentax S5z digital camera and I'd like to use it.
Doesn't look like 'just' 10mA to me :-(

Doesn't look like 'just' 10mA to me :-(

.:madworm:.
04 May 2012 138
1A / div The desired current is 10mA, which is reached in the end. Unfortunately any sensitive device would have been killed way before that (e.g. a LED).
YauDL - Dummy Load

YauDL - Dummy Load

.:madworm:.
15 Jun 2012 192
V0.1 board assembled. It works OK once all the bugfixes have been applied to it. Left-over PCBs might be found here .
The same 2 MOSFETS again

The same 2 MOSFETS again

.:madworm:.
15 Jun 2012 158
Bodge capacitors

Bodge capacitors

.:madworm:.
15 Jun 2012 279
I had to add these two (back-to-back) to get the thing to run stably. I don't know if it is the dummy load or the DUT that starts to oscillate...
YauDL-V0.1 - backside

YauDL-V0.1 - backside

.:madworm:.
15 Jun 2012 154
I got the boards today. Left-over PCBs might be found here .
2 P-CH MOSFETS

2 P-CH MOSFETS

.:madworm:.
15 Jun 2012 176
They are used as reverse polarity protection. These tiny SOT23 parts (AO3401) are really quite beefy. They exhibit about 50mOhm (logic level drive) and can take up to 4A each. The most they will have to tolerate on this board is 2.5A each. I got these on ebay. A pack of 50pcs is about 12$ including shipping.
Dummy Load - backside

Dummy Load - backside

.:madworm:.
15 Jun 2012 170
Believe it or not, but I couldn't find a battery holder with usable CAD drawings.
YauDL-V0.1 - frontside

YauDL-V0.1 - frontside

.:madworm:.
15 Jun 2012 183
I got the boards today. Left-over PCBs might be found here .
Regulator + TANTALUM caps

Regulator + TANTALUM caps

.:madworm:.
15 Jun 2012 181
It WILL NOT WORK with ceramic capacitors...
Wire-wound potentiometer

Wire-wound potentiometer

.:madworm:.
15 Jun 2012 179
Vishay 534
YauDL - Dummy Load

YauDL - Dummy Load

.:madworm:.
15 Jun 2012 156
V0.1 board assembled. It works OK once all the bugfixes have been applied to it. Left-over PCBs might be found here .
Red and black

Red and black

.:madworm:.
15 Jun 2012 148
Left-over PCBs might be found here .