Externet
Well-Known Member
AC------------------------------||---------------------------load-------------------------AC
An AC load works with a limiting current from a series capacitor.
Brief interruptions of the AC supply can impose doubled voltage to the load as charge stored in the capacitor may sum the supply.
In order to prevent such, a resistor in parallel to the capacitor allows its discharge before the AC is restored.
------> What is the safest convenient discharge time to choose ?
If half an AC cycle of 60 Hz is chosen as discharge time; the discharge time would be 0.008 seconds.
If the capacitor is 0.5 uF
t=RC
0.008 = R 0.0000005
R= 16000 Ohms maximum
If an arbitrary interruption duration of 10 Hz is chosen, the discharge time would be 0.17 seconds.
For he same 0.5 uF capacitor:
t=RC
0.17=R 0.0000005
R=340000 Ohms maximum
Do I have it right?
An AC load works with a limiting current from a series capacitor.
Brief interruptions of the AC supply can impose doubled voltage to the load as charge stored in the capacitor may sum the supply.
In order to prevent such, a resistor in parallel to the capacitor allows its discharge before the AC is restored.
------> What is the safest convenient discharge time to choose ?
If half an AC cycle of 60 Hz is chosen as discharge time; the discharge time would be 0.008 seconds.
If the capacitor is 0.5 uF
t=RC
0.008 = R 0.0000005
R= 16000 Ohms maximum
If an arbitrary interruption duration of 10 Hz is chosen, the discharge time would be 0.17 seconds.
For he same 0.5 uF capacitor:
t=RC
0.17=R 0.0000005
R=340000 Ohms maximum
Do I have it right?