DIYbio:Notebook/Open Gel Box 2.0/Power Supply: Difference between revisions
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What we need: clean, stable, variable DC at 20V-100V, adjustable (possibly up to 600V). | What we need: clean, stable, variable DC at 20V-100V, adjustable (possibly up to 600V). | ||
Consider: using a cheap computer ATX supply feeding a voltage regulator such as an LM317 feeding a DC/DC step-up built on the model introduced in http://www.edn.com/contents/images/70804di.pdf (from http://www.edn.com/article/CA431146.html ). | |||
For $10-$20 , you get plenty of overhead (i.e. 400W max neighborhood), 50/60Hz and 110/220V independence, amp draw regulation (probably? not sure what typical protection is in the low price range), and handy plug-in molex connectors. The last point is particularly salient, if you can power more than one device with a versatile power supply. | |||
I do not know how adding a voltage regulator (LM317 etc) and DC/DC step-ups after these affect their voltage regulating properties. | |||
Converting a computer ATX power supply to a really useful lab power supply | Converting a computer ATX power supply to a really useful lab power supply | ||
http://www.instructables.com/id/Converting-a-computer-ATX-power-supply-to-a-really/ | http://www.instructables.com/id/Converting-a-computer-ATX-power-supply-to-a-really/ | ||
Revision as of 22:41, 6 January 2009
Jan 06, 2009
What we need: clean, stable, variable DC at 20V-100V, adjustable (possibly up to 600V).
Consider: using a cheap computer ATX supply feeding a voltage regulator such as an LM317 feeding a DC/DC step-up built on the model introduced in http://www.edn.com/contents/images/70804di.pdf (from http://www.edn.com/article/CA431146.html ).
For $10-$20 , you get plenty of overhead (i.e. 400W max neighborhood), 50/60Hz and 110/220V independence, amp draw regulation (probably? not sure what typical protection is in the low price range), and handy plug-in molex connectors. The last point is particularly salient, if you can power more than one device with a versatile power supply.
I do not know how adding a voltage regulator (LM317 etc) and DC/DC step-ups after these affect their voltage regulating properties.
Converting a computer ATX power supply to a really useful lab power supply http://www.instructables.com/id/Converting-a-computer-ATX-power-supply-to-a-really/
How to Add Variable Voltage to Your ATX Based Bench Power Supply http://www.wikihow.com/Add-Variable-Voltage-to-Your-ATX-Based-Bench-Power-Supply
Building a Power Supply http://www.eleinmec.com/article.asp?16
