BJT Voltage Divider Bias Calculator
Calculate a forward-active NPN divider-bias operating point including divider loading by base current.
YOUR CALCULATION
Result
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Calculation steps
Work through one step at a time or reveal the complete calculation. The steps use your current inputs.
How to calculate
Replace the divider with its Thevenin equivalent and include base-current loading.
Ib=(Vth−Vbe)/(Rth+(β+1)Re); Ic=βIb; Vce=Vcc−IcRc−(β+1)IbRe
Worked example
If divider Thevenin voltage is no greater than the entered Vbe, the simplified model is cut off.
Assumptions and input details
Fixed Vbe and beta model, ideal resistors and no temperature variation. Forward-active results require Vce≥0.2 V; saturated cases are rejected rather than extrapolated. No component ratings or circuit construction recommendation.
Unit definitions
Unit selection is independent of language. Each selector contains only units for its physical quantity. Calculations use defined base units internally.
SI prefixes are explicit: for example, milli means one thousandth, micro one millionth and kilo one thousand. Changing a unit changes the interpretation of the entered number.
Using this calculator
Can I enter my own problem?
Yes. Replace the example values with your own inputs. The result, calculation steps, tables and applicable diagrams update from those inputs. Blank or invalid values clear the result; example values are never silently substituted for missing inputs.
Are the results exact?
Results use floating-point arithmetic and displayed rounding. Read the formula, assumptions and any stated data precision before interpreting the result.
Is my input uploaded?
The calculation runs in your browser. No account, file upload or external AI service is required. Inputs are not saved between page reloads.
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