Reconcile one completed steady-DC two-resistor voltage-divider record across source, tolerance, resistive load, instrument loading, and reported output envelopes.
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Inputs that matter
One de-identified completed engineering-reviewed, manufacturer-application or controlled-lab record; responsible revision/date/reviewer; exact source, nodes, return and two-resistor topology; supported steady-DC purely resistive applicability; source voltage and source series resistance minimum/nominal/maximum evidence; two already selected exact R1/R2 products with separate nominal tolerances; explicit operational-load and instrument-input basis records plus optional all-or-none resistance triples; component-rating, measurement/safety and retention boundaries; a completed same-basis minimum/nominal/maximum output report; a user-owned output agreement tolerance; and an optional independent source with all three same-basis outputs
Output to expect
R1/R2 resistance intervals; effective lower-branch minimum/nominal/maximum; reproduced output, ratio and source-current minimum/nominal/maximum; nominal unloaded output, loading shift, unloaded Thevenin resistance and nominal branch powers; completed-report differences and optional independent same-basis differences
How it works
Validate every provenance field, model choice, ordered range and optional group; combine R2, the entered operational load and entered instrument input in parallel; include accepted source series resistance above R1; reproduce nominal output; use low-source/high-upper-path/low-lower-branch and high-source/low-upper-path/high-lower-branch monotonic endpoints for the conservative output envelope; reproduce current endpoints; and reconcile completed plus optional independent results inside the user-owned calculation-transcription tolerance
Confirm source connection, return, topology, R1/R2 products, tolerances, operational-load state, instrument function/range/mode and every min/nominal/max basis match. A blank optional triple means an explicit open circuit; zero ohms is a short circuit, not no load.
Use the result only for steady-DC purely resistive arithmetic reconciliation. It does not model leakage-current sources/sinks, switched-capacitor acquisition, AC/reactive/transient/noise/TCR/drift/fault behavior; choose components, buffers, ADCs, meters or regulators; prove ratings, measurements, construction, safety or compliance; diagnose a circuit; or authorize purchase, assembly, energizing, probing, installation, production or use.
Choose your path
Built around the job you need to finish
Reconcile one completed, already selected steady-DC two-resistor-divider candidate against explicit source, source-resistance, resistor-tolerance, purely resistive load, instrument-input and reported-output records without selecting components or approving a circuit.
Electronics engineer checking a completed divider candidate
Expose whether the report used the actual source interval, source resistance, selected resistor tolerances and every accepted resistive branch rather than an ideal unloaded shortcut.
Freeze the exact source/nodes/return and selected R1/R2 products, enter min/nominal/max evidence for source and branches, then reconcile the completed output envelope.
Gets reproducible nominal and endpoint voltage/current arithmetic while device dynamics, component ratings, construction and approval remain in the responsible design record.
Bench or service reviewer reconciling a loaded voltage report
Account for the exact instrument mode/range and receiving load without treating a meter label, measured value or zero-ohm placeholder as complete evidence.
Retain the controlled test record, enter exact instrument/load resistance triples, compare the completed report and deliberately save only the accepted same-basis record.
Can identify arithmetic agreement or mismatch without validating the instrument, diagnosing the circuit, probing an energized node or declaring the work safe.
Demonstrate loaded parallel-branch arithmetic and tolerances while clearly separating ADC sampling, leakage current, AC behavior and product/safety decisions.
Load the reviewed example, inspect the nominal and endpoint formulas, trigger unsupported-model/partial-range/report errors, and review the Decision Boundary.
Learners can reproduce the loaded result and explain why static Vout arithmetic is not component selection, ADC drive proof, total-error analysis or work authorization.
Authoritative checks for this tool
Outputs and checklists are planning aids. Review the linked current authorities and the records, terms, instructions, and requirements that apply to your exact situation before a consequential decision.
The executable model is one settled DC source with accepted series resistance, one selected upper resistor, one selected lower resistor, and only explicitly entered purely resistive load and instrument branches. Another source, topology, mode, range or operating state is another record.
Combine every entered lower branch
R2, the optional operational load and the optional instrument input are parallel branches. Leaving a complete optional triple blank means open circuit; zero ohms never means no load.
Nominal output uses every nominal input. The low endpoint uses minimum source voltage, maximum source-plus-R1 path and minimum lower branch; the high endpoint uses the opposite monotonic endpoints. Nominal branch powers are arithmetic references, not rating approval.
Compare the reproduced minimum, nominal and maximum outputs with one completed same-basis report and optional independent same-basis result inside a user-owned transcription tolerance. Dynamic input drive, leakage current, measurement uncertainty and safety remain separate records.
Updated: August 2026
Example Scenarios
Verify that a completed report used the exact selected resistors, source envelope, source resistance and explicit receiving branches without turning the check into a component selector.
Record the actual meter mode and input resistance, reproduce its loading effect, and compare a same-state completed result without authorizing probing or energized work.
Show why an unloaded equation cannot explain a loaded result and why ADC sampling, leakage-current inputs, component ratings and electrical safety need separate evidence.
Common Mistakes to Avoid
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Showing the unloaded formula beside a loaded result
✓
Combine R2, every operational load and the instrument input in parallel, then display the exact expression that reproduces the output.
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Using zero ohms to mean no load
✓
Zero ohms is a short circuit. Represent an absent branch by clearing its complete optional resistance triple and retaining an explicit open-circuit record.
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Assuming every meter is a fixed 10 MΩ load
✓
Use the exact instrument, function, range and mode record; input resistance can differ by configuration.
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Treating a reproduced voltage envelope as circuit approval
✓
Keep dynamic device behavior, product ratings, measurement validity, wiring, protection, construction and electrical-work authorization outside this arithmetic reconciliation.
FAQ
No. Enter two already selected product values and their accepted nominal tolerances. Preferred-series membership, availability, package, working voltage, power, thermal behavior and final selection stay with the responsible design record.
Input impedance can change by instrument, function, range and mode. An entered range becomes another parallel branch; the Tool never inserts a universal meter value.
No. Sample-and-hold capacitance, acquisition time, sample rate, filters, leakage, settling, device/reference errors and total error require the exact ADC data and device-specific analysis or simulation.
No. They are nominal arithmetic for the entered record. Verify the exact product's working voltage, rated power, ambient derating, mounting, TCR, pulse and reliability evidence separately.
Clear all three minimum, nominal and maximum fields for that optional branch and retain an explicit open-circuit or absent-instrument basis record. Do not enter zero ohms.
Only that the completed minimum, nominal and maximum values reproduce inside the entered calculation-transcription tolerance on the identical recorded basis. It does not validate measurement uncertainty, construction, safety or approval.
About DC Divider Record Check
Review—not select—one source-owned DC divider candidate. Retain the exact topology, selected R1/R2 products, source and resistance ranges, explicit load and instrument branches, then reproduce and reconcile the completed output report.
