little bat k1.spdns.de / Develop / Hardware / K1-Computer / Case+PSU /
Start | Power Supply Unit | Case

The K1-16/16 Computer

Case & Power Supply Unit

Last updated: 2010-06-28
Questions & comments to Kio

The Power Supply Unit (PSU)

2009-02-18: Before i kill some ICs with an inappropriate voltage supply, i built the power supply unit on strip board today. Major component is a DC/DC converter from Syko which i owned by chance. It eats any kind of direct current up to 48 V and supplies me with 5.1 V. It has feed-back lines for +5V and GND so it can compensate the power drop accros supply leads and fuse. I used the +5V feedback, while the GND feedback had to be omitted, because my power connector only has 3 pins. Instead i abused the GND feedback pin to get an additional +0.1 V "boost" for the CPU boards. Better a little bit too much than under. :-)
PSU-1.jpg

The Case

2009-05-04: First shots of the computer case, made from different kinds of wood:

Case-1.jpg

Case-2.jpg

2009-09-21: While the ALU is in production i worked on various other parts, amongst others the case got color and a glossy finish. It also got a power switch (connected to the DC/DC converter) and a reset switch at the back side.

case-3.jpg

2010-03-17: The frontpanel board and the frontplate are finished.

case-4.jpg

Material

Name Letzte Änderung Länge 
Front Panel/ 2016-12-08 17:03 32 
Images/ 2009-12-28 14:21
Wako SRI-E DC_DC Wandler.pdf 2009-11-05 20:55 152939 

powered by vipsi - your friendly VIP Script Interpreter

Valid HTML Valid CSS