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openbench:psu [2010/12/30 15:37]
davidcary pulls the voltage down?
openbench:psu [2016/01/28 18:05] (current)
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 ====== comments ====== ====== comments ======
  
-What happens when the output voltage is set to 3.3 V, and I hook it up to a 12 V battery?+What happens when the power supply ​output voltage is set to 3.3 V, and I hook that output ​up to a 12 V battery?
 Which is better: Which is better:
    * The PSU pulls the voltage down to 3.3 V (or as close as possible until it hits the current limit)? or    * The PSU pulls the voltage down to 3.3 V (or as close as possible until it hits the current limit)? or
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 ---- ----
 +
 +Should have a 3.3v fixed output as well as the 5v.  Easy enough to handle. ​ 1A should be good for most purposes on the fixed supplies. ​ Elektor ran a switching PSU module in April that I made some tweeks on and currently as waiting on boards. Galvanically isolating the adjustible supplies is a potential issue. ​ As soon as you hook a meter panel up, the two supplies are tied together. Hack around it by using two MCUs for A/D and transmitting to a third one via optoisolators?​--pstemari
 +
 +====== Further reading ======
 +
 +   * "Bench power supply tutorial"​ https://​www.adafruit.com/​forums/​viewtopic.php?​f=8&​t=24200
 +   * "​Bench-Top Power Supply"​ by James Littlejohn for the Tulsa Electronics Club
 +   * "​Building a digitally controlled bench power supply using an AVR" http://​electronics.stackexchange.com/​questions/​18249/​building-a-digitally-controlled-bench-power-supply-using-an-avr
 +   * DIY Variable bench power supply http://​www.instructables.com/​id/​DIY-Variable-bench-power-supply/​
 +   * DIY PSU into Bench Power supply http://​www.instructables.com/​id/​DIY-PSU-into-Bench-Power-supply/​
 +   * DIY digital bench power supply http://​hackaday.com/​2011/​06/​06/​diy-digital-bench-power-supply/​
 +   * My DIY Bench Power Supply http://​www.swharden.com/​blog/​2012-12-18-my-diy-bench-power-supply/​
 +   * DIY Bench Power Supply http://​www.adwiens.com/​projects/​electronics/​07/​index.html
/home/ladyada/public_html/wiki/data/attic/openbench/psu.1293723475.txt.gz · Last modified: 2016/01/28 18:05 (external edit)