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Analog Discovery 3 or budget bench setup
egonotto:
--- Quote from: RoGeorge on June 19, 2024, 06:43:00 pm ---For a Gilbert cell, a phone charger (or just a USB cable) can be the power supply, and a sound card can be the dual channel generator. Then the oscilloscope can be used to visualize the signals.
--- End quote ---
Hello,
Good. But next he wants to check the frequency response of an AD620. For this he needs a dual power supply and a higher frequency than a sound card delivers. No problem with an AD.
Best regards
egonotto
RoGeorge:
Minimum power supply for AD620 is ±2.3 V
https://www.analog.com/media/en/technical-documentation/data-sheets/AD620.pdf
Take 4xAA batteries to get +/-V, or pull out the phone battery and add it in series with the USB charger to make a +5/-4V supply, then use the oscilloscope's generator to display the frequency response (the oscilloscope has an internal generator, and can display Bode plots):
Bode plot from https://www.eevblog.com/forum/testgear/sds800x-hd-review-demonstration-thread/msg5335361/#msg5335361
:)
Antonio90:
The SDS800X-HD doesn't have an internal generator. You can control Siglent brand AWGs or buy the usb generator. There is a python script to control AWGs from a different brand, but it's still an additional expense.
Internal generators on Siglent oscilloscopes begin with the 2000 series, which start at the price of a full basic lab.
egonotto:
--- Quote from: RoGeorge on June 19, 2024, 08:45:15 pm ---Minimum power supply for AD620 is ±2.3 V
https://www.analog.com/media/en/technical-documentation/data-sheets/AD620.pdf
Take 4xAA batteries to get +/-V, or pull out the phone battery and add it in series with the USB charger to make a +5/-4V supply, then use the oscilloscope's generator to display the frequency response (the oscilloscope has an internal generator, and can display Bode plots):
:)
--- End quote ---
Hello,
the SDS804X HD does not have a built-in generator. You have to buy one separately. It costs more than half the price of an AD3 Akademisch.
What I'm getting at is that the AD is just a complete little easy-to-use lab. You can do everything differently, but it costs extra effort and extra money.
The next application I could mention is the Curve Tracer. Or Data Logger or Logic Analyzer or Pattern Generator or Impedance Analyzer.
Best regards
egonotto
RoGeorge:
--- Quote from: egonotto on June 19, 2024, 09:28:54 pm ---the SDS804X HD does not have a built-in generator
--- End quote ---
The generator exists, just that it is software-locked, but there are unlocks:
https://www.eevblog.com/forum/testgear/siglent-sds804x-hd-same-upgrade-scripts/
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