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> Open frame switching power supply +5V/+12V/-12V 3A/1.2A
Open frame switching power supply +5V/+12V/-12V 3A/1.2A
Today up for grabs are some switching power supplies. I have several of these, they are new in the box, but the components have a date code of 1991. When you purchase the power supply I will hook it up to a test fixture and load test it for rated current and voltage. I guarantee them not to be DOA, but otherwise no warranty or returns. The specifics are as follows:
Outputs : +5V @ 3.0A / +12V @ 1.2A / -12V @ 0.3A
These supplies are excellent to use for small projects, I have used them in many projects and have yet to see one fail.
I have been asked about my procedure for testing these supplies. I use a current sink to load the supplies to their rated current and leave them running under load for about 15 minutes. During the load testing I scope the output to verify that the output is clean and that the ripple and output voltage are to specification. Thanks for the questions!
