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

Regulator test: 1.06V - no load

Regulator test: 1.06V - no load

.:madworm:.
18 Sep 2015 187
TD6810, 200mV/div
Regulator test: noise at 150mA

Regulator test: noise at 150mA

.:madworm:.
18 Sep 2015 1 219
TD6810, 10mV/div
Regulator test: 1.06V @ 150mA

Regulator test: 1.06V @ 150mA

.:madworm:.
18 Sep 2015 1 217
TD6810, 200mV/div
Half-Ohm mΩ DMM adapter

Half-Ohm mΩ DMM adapter

.:madworm:.
22 May 2013 123
It works very well. Made by Jaanus Kalde .
Half-Ohm mΩ DMM adapter

Half-Ohm mΩ DMM adapter

.:madworm:.
22 May 2013 136
It works very well. Made by Jaanus Kalde .
A bit more than 12V

A bit more than 12V

.:madworm:.
31 May 2013 141
That wall-wart is a piece of crap. It claims to spit out 12V DC, capable of 500mA. I used my dummy-load to test it a bit. I had to pull close to 700mA out of it to make its output drop to 12V. It will go into the recycling bin right away. Fortuitously I found a switch-mode power supply that goes up to 15V. I'll use that one instead. As the wallwart only consisted of a transformer, rectifier diodes and a cap, all the battery charging logic must be in the car-jump-start device itself. Shouldn't be an issue.
No external fuse access ;-(

No external fuse access ;-(

.:madworm:.
17 May 2013 129
I've blown this fuse again. One reason might be that I use 160mA ones instead of 500mA. Why? I have one, but not the other.