LINEAR Application Note 112 Specifications User Guide
Summary
Designed for electrical engineers working with high-power DC systems, this guide tackles the critical challenge of measuring individual cell voltages within large series battery stacks. It presents advanced solutions—such as transformer-based sampling and differential amplifier techniques—to accurately monitor voltage in demanding environments like automotive or aerospace applications. The manual covers methods to overcome common mode voltage interference and component breakdown limitations, ensuring reliable power monitoring for complex battery arrays.
Manual Details
| Brand | Linear |
|---|---|
| Pages | 24 |
| File Size | 301.78 KB |
| Published | June 16, 2026 |
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Frequently Asked Questions
Why is measuring voltage across series-connected battery stacks challenging?
Standard measurement techniques struggle because the high 'common mode' voltage generated by the stack can exceed the breakdown capabilities of typical low-voltage components.
How does the transformer-based sampling voltameter work?
It uses a controlled pulse generator and a clamping circuit to extract individual cell voltages while rejecting common mode voltages, minimizing error terms like diode and transformer leakage.
What is the stated accuracy of the electric sampling voltmeter at specific conditions?
At 25°C, the accuracy is specified as 0.05% over a 0V to 2V battery range.