Electronics > Beginners
Psu ripple and transients, oscilloscope question.
<< < (3/3)
davelectronic:
That's interesting, i only need a steady supply of voltage and current. Inrush spikes transients should be reasonably straight forward  to get attenuated, sudden changes in demand for power might be an issue. A lot to do with linear HF amplifiers drawing very high power, almost instantly, this is an unknown to me at this stage. A supply that's rated above the amplifiers rating, must be capable of delivering this power.

Most of the testing ive done is with out a scope, and has been halogen lamps for loading. I understand now the cold resistance of the lamp means the start up current from any psu tested this way, involves huge sudden current demands.
Most repurposed server power supplys pass this test, but a few hp and dell power adapters don't, i think this is because the psu sees the load as a dead short, and a protection circuit in the psu sences this lamp load and wll not start up. A few non starters with a lamp load show a brief power led start up, but goes out just as quickly. I really need an electronic load, but every thing i do, i have to put stuff away as I've very little space.
Navigation
Message Index
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod