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

Buck regulator - current

Buck regulator - current

.:madworm:.
20 May 2015 171
KIS-3R33S breakout

KIS-3R33S breakout

.:madworm:.
20 May 2015 193
Buck regulator - switching noise

Buck regulator - switching noise

.:madworm:.
20 May 2015 1 241
Vertical scale: 20mV/div - 10x probe.
KIS-3R33S

KIS-3R33S

.:madworm:.
31 May 2012 114
Testing...
KIS-3R33S

KIS-3R33S

.:madworm:.
31 May 2012 122
Be careful when removing the legs.
KIS-3R33S

KIS-3R33S

.:madworm:.
31 May 2012 122
Got rid of most of the silicone rubber.
KIS-3R33S

KIS-3R33S

.:madworm:.
31 May 2012 142
Popped the cap
Finished KIS-3R33S board

Finished KIS-3R33S board

.:madworm:.
31 May 2012 139
Current consumption in power-down mode is about 60µA.
KIS-3R33S

KIS-3R33S

.:madworm:.
31 May 2012 151
Modified to output 4.5V instead of the standard 3.3V. The most useful "manual" for this device is currently this one. Maybe I will add a blog post about it, which may be around for longer.
KIS-3R33S

KIS-3R33S

.:madworm:.
31 May 2012 105
Silly-cone thermal compound. Not terribly hard to remove, but it is annoying.
KIS-3R33S

KIS-3R33S

.:madworm:.
31 May 2012 117
All legs gone
KIS-3R33S

KIS-3R33S

.:madworm:.
31 May 2012 129
Missing legs
KIS-3R33S

KIS-3R33S

.:madworm:.
31 May 2012 98
These step-down modules are currently available on ebay for about 40¢ per piece (pack of 20). Input voltage 5V-23V output a bit lower. 3A continuous current, 4A peak. They DO require an additional output capacitor to run stably.
KIS-3R33S

KIS-3R33S

.:madworm:.
31 May 2012 114
These step-down modules are currently available on ebay for about 40¢ per piece (pack of 20). Input voltage 5V-23V output a bit lower. 3A continuous current, 4A peak. They DO require an additional output capacitor to run stably.
Step-down converter

Step-down converter

.:madworm:.
29 May 2012 132
It is pretty efficient. Drop out voltage is about 0.5V at light loads. Only the trimmer is a bit strange. It's really unwilling to turn without force. Maybe I'll replace it some day.
21 items in total