Home
Back
AC to DC Voltage Conversion Formula:
| From: | To: |
AC to DC voltage conversion is the process of converting alternating current (AC) voltage to direct current (DC) voltage. This is commonly done using rectifiers in power supplies and electronic devices.
The calculator uses the conversion formula:
Where:
Explanation: The factor 0.707 (which is 1/√2) converts RMS AC voltage to equivalent DC voltage for a full-wave rectified sine wave.
Details: Most electronic devices require DC power to operate, while mains power is typically AC. This conversion is essential for powering computers, smartphones, and other electronic equipment from wall outlets.
Tips: Enter the AC RMS voltage in volts. The value must be greater than 0. The calculator will provide the equivalent DC voltage after full-wave rectification.
Q1: Why is the conversion factor 0.707?
A: 0.707 is approximately 1/√2, which is the ratio between RMS voltage and peak voltage for a sine wave. For DC equivalent after rectification, this factor is used.
Q2: Does this calculation include voltage drop from diodes?
A: No, this is an ideal calculation. Real-world rectifiers have diode voltage drops (typically 0.6-0.7V per diode) that should be accounted for in precise applications.
Q3: Is this for half-wave or full-wave rectification?
A: This calculation is for full-wave rectification. For half-wave rectification, the DC voltage would be approximately half of this value.
Q4: What about capacitor filtering?
A: This calculation gives the average DC voltage without filtering. With capacitor filtering, the DC voltage can approach the peak AC voltage (V_ac × 1.414).
Q5: Can this be used for three-phase AC systems?
A: No, this calculation is specifically for single-phase AC systems. Three-phase rectification uses different conversion factors.