Voltage Sensor — Proteus Library Write-up
SPICE syntax
To truly master Proteus, you should compile a custom .MODEL file using .
- Galvanic isolation (up to 2.5kV).
- Output: Current signal (50mA max) converted to voltage via a load resistor.
- Accuracy: ±0.8%.
Steps:
Search for these community libraries (Proteus 8/9 format):
Voltage Divider Circuit:
It reduces higher input voltages (up to 25V) to a range (0–5V) that a microcontroller like an Arduino can safely read through its analog pins.
- High-value resistor divider: R1 (top) and R2 (bottom) set division ratio. For 100 V -> 3.3 V use ratio ≈ 30.3:1 (e.g., R1 = 3 MΩ, R2 = 100 kΩ gives 100 V * (100k/(3M+100k)) ≈ 3.23 V).
- Buffer: unity-gain op amp between divider midpoint and MCU ADC to reduce loading and improve sampling.
- Input protection: series resistor (between source and R1) to limit currents for clamp devices; clamp diodes to rails or a zener to limit over-voltage onto divider; TVS for surge protection if needed.
- RC filter: small series resistor + capacitor to ground at divider midpoint to filter high-frequency noise and EMI. Choose cutoff above required bandwidth for measurement.
- Consider resistor power ratings and max dissipation at 100 V; use series combinations for voltage distribution.
B. Use manufacturer SPICE models / subcircuits
Voltage Sensor Proteus Library ^hot^ -
Voltage Sensor — Proteus Library Write-up
SPICE syntax
To truly master Proteus, you should compile a custom .MODEL file using .
- Galvanic isolation (up to 2.5kV).
- Output: Current signal (50mA max) converted to voltage via a load resistor.
- Accuracy: ±0.8%.
Steps:
Search for these community libraries (Proteus 8/9 format): voltage sensor proteus library
Voltage Divider Circuit:
It reduces higher input voltages (up to 25V) to a range (0–5V) that a microcontroller like an Arduino can safely read through its analog pins. Voltage Sensor — Proteus Library Write-up SPICE syntax
- High-value resistor divider: R1 (top) and R2 (bottom) set division ratio. For 100 V -> 3.3 V use ratio ≈ 30.3:1 (e.g., R1 = 3 MΩ, R2 = 100 kΩ gives 100 V * (100k/(3M+100k)) ≈ 3.23 V).
- Buffer: unity-gain op amp between divider midpoint and MCU ADC to reduce loading and improve sampling.
- Input protection: series resistor (between source and R1) to limit currents for clamp devices; clamp diodes to rails or a zener to limit over-voltage onto divider; TVS for surge protection if needed.
- RC filter: small series resistor + capacitor to ground at divider midpoint to filter high-frequency noise and EMI. Choose cutoff above required bandwidth for measurement.
- Consider resistor power ratings and max dissipation at 100 V; use series combinations for voltage distribution.
B. Use manufacturer SPICE models / subcircuits Galvanic isolation (up to 2
