Products > Test Equipment
Benchtop Power Supply with 0.05 mV step resolution?
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bdunham7:

--- Quote from: ninjanation217 on February 21, 2023, 01:13:50 pm ---Thanks! I did actually look into this one prior, unfortunately the lead time is crazy.

--- End quote ---

Assuming that was directed at me, the Keithley 2450 appears sold out but the 2460 ($10K, overkill for your application but will work) seems available immediately.  TEquipment says their stock is 6, for example.

I've attached a screenshot of how quoting works in the forum.  Just press the 'quote' button and edit your reply as needed. HTH
alm:

--- Quote from: bookaboo on February 21, 2023, 11:42:55 am ---OP did state a power supply, but I don't think he needs a power supply to simulate a sensor, just a reference. In fact a stable voltage reference, 10 turn pot, suitable opamp and a decent meter would suffice?

--- End quote ---
These days programmable usually means programmed from a computer, not by turning a pot. Sure you could use an Arduino with external DAC and attenuator, which is great for a hobby project. You could even build your own PWM DAC. But sending that to a cal lab might be fun, and also you may not spend your time troubleshooting your own design.

ninjanation217:

--- Quote from: bdunham7 on February 21, 2023, 02:47:26 pm ---
--- Quote from: ninjanation217 on February 21, 2023, 01:13:50 pm ---Thanks! I did actually look into this one prior, unfortunately the lead time is crazy.

--- End quote ---

Assuming that was directed at me, the Keithley 2450 appears sold out but the 2460 ($10K, overkill for your application but will work) seems available immediately.  TEquipment says their stock is 6, for example.

I've attached a screenshot of how quoting works in the forum.  Just press the 'quote' button and edit your reply as needed. HTH

--- End quote ---

Thanks! I thought hitting the reply would include the comment I was replying to haha.

I ended up going with the Keithley 230, as it does meet the requirements, though its missing some fancy features that are not really needed. More importantly, I could get one for just over $500 after certification cost.

Thanks to everyone in this forum for all of the wonderful information, and thanks again for teaching me the proper way to reply to someone.

ninjanation217:

--- Quote from: alm on February 21, 2023, 03:20:21 pm ---
--- Quote from: bookaboo on February 21, 2023, 11:42:55 am ---OP did state a power supply, but I don't think he needs a power supply to simulate a sensor, just a reference. In fact a stable voltage reference, 10 turn pot, suitable opamp and a decent meter would suffice?

--- End quote ---
These days programmable usually means programmed from a computer, not by turning a pot. Sure you could use an Arduino with external DAC and attenuator, which is great for a hobby project. You could even build your own PWM DAC. But sending that to a cal lab might be fun, and also you may not spend your time troubleshooting your own design.

--- End quote ---

You are correct, programmed by a computer is much preferred over turning a pot. At the bare minimum a user interface where you can type in data at the unit.

I was able to solve the issue for around $500 with a Keithley 230 (including cost for sending it in for certification). Realistically if you include time of design, troubleshooting, certification of a custom design (which would be a nightmare) it would have cost considerably more than that.

If you are an home gamer, sure, build your own thing. However, in a professional setting, its probably not the best idea.

Thanks to everyone on the sub for their help. Everyone had a lot of good ideas and recommendations.
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