TSP #206 - Keithley 2281S Precision Power Supply & Battery Simulator Review, Teardown & Experiments
In this episode Shahriar reviews the Keithley 2281S-20-6. This is a Dynamic Battery Simulator and Precision DC Bench Power Supply with TFT LCD display uses a model to emulate the response of a battery over its discharge cycle. Since the model can be based on the average current of the product that the battery will power, you can estimate battery life and analyze product performance over the life of the battery:
https://www.tek.com/en/products/keithley/dc-power-supplies/2281s-series
The review is organized as follows:
00:00 – Introduction.
00:35 – Instrument overview, interface, GUI, functions & design.
04:08 – Teardown, architecture, components and build quality.
10:03 – Precision power supply benefits, short-circuit hunting.
14:56 – Time-domain capabilities, pulse measurements, graphing functions, triggering.
20:59 – Battery Test capabilities, measuring super capacitors, measuring ESR, battery discharge.
26:20 – Creating a battery model during a charge cycle, battery capacity measurements.
27:29 – Creating a discharge battery model using the Keithley 2450 SMU.
29:32 – Battery Simulator function, battery models, modifying battery limits, stress testing DUT.
36:14 – Concluding remarks.
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