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| R&S PSU number of channels needed |
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| salomonander:
Hey, I often need voltages like +-15v and +-18v. Will i need to get at least a two channel psu? Or can the r&s supplies do it with one channel? Thanks |
| tautech:
Split rail designs normally need a 0V reference where a 2ch PSU in Series mode/configuration is the normal solution although a on-board voltage divider or LM78**/79** regulators are sometimes also used. 18V spit rail will require 36V or more with is a value beyond what is normally considered the 'industry safe' of ~30V. Best versatility will be provided with a 2ch PSU providing 30V/channel. |
| salomonander:
Thanks! |
| pdenisowski:
Pretty much all R&S supplies can output at least 20 volts, and several go up to 32, 64, or 100 volts https://www.rohde-schwarz.com/us/products/test-and-measurement/dc-power-supplies_64067.html We also sell a four-quadrant SMU (the NGU) that directly supports -20 volts to +20 volts. If you want to do it all with one channel on one supply, that would be the easiest way to do it. |
| coromonadalix:
you have many who track rails IE adjust them simultaneously ... 1 master the other channel as slave unless you go with fixed ones too ... ? it depends of your current requirements 0-30vdc (per channel) models are the most common, some have switches to do single/ separated, in serial or in parallel, but a positive and negative one at the same time, haven't seen a lot as Tautech wrote, you need a ground reference and isolated supplies from each other .... and you put them as attached image, nothing fancy, but you need to adjust them separately ... |
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