Calcolatore Risoluzione DAC
Calcola la risoluzione e la tensione di uscita di un convertitore digitale-analogico.
Ripple Voltage (Vpp)
8.333 V
Ripple Voltage (Vpp) vs Load Current
Formula
## Power Supply Ripple ### Formula **V_ripple = I_load / (C x f)** Where f is the ripple frequency (120 Hz for full-bridge rectifier on 60 Hz mains). Larger capacitance or lower current reduces ripple.
Esempio Risolto
1 A load, 1000 uF filter cap, 120 Hz ripple (full-bridge on 60 Hz).
- 01C = 1000 / 1000000 = 0.001 F
- 02V_ripple = 1 / (0.001 x 120) = 8.33 Vpp
- 03V_rms = 8.33 / (2 x 1.732) = 2.406 V
Domande Frequenti
Why 120 Hz for 60 Hz mains?
A full-bridge rectifier produces two pulses per cycle, doubling the ripple frequency. Half-bridge gives 60 Hz ripple.
How much ripple is acceptable?
Depends on the load. Typically under 5% of DC voltage. Sensitive circuits need millivolt-level ripple from additional regulation.
Does adding more capacitance always help?
Yes for ripple, but very large caps draw high inrush current and may exceed rectifier surge ratings.
Impara