08-31-2021, 07:34 PM
It is a formula from the grade 9 physics of the soviet school program.
The Z=SQRT [(1/(6.28*f*C)^2)+R^2).
C is your cap in Farads, R is your total filament resistance (your voltage, say 25V over your current, say 150mA; given as an example.
Then you calculate the C such that the total U (say 220V) over Z gives you your nominal current (the mentioned 150mA).
For 120V it is about 6.8 to 8uF in most cases.
The Z=SQRT [(1/(6.28*f*C)^2)+R^2).
C is your cap in Farads, R is your total filament resistance (your voltage, say 25V over your current, say 150mA; given as an example.
Then you calculate the C such that the total U (say 220V) over Z gives you your nominal current (the mentioned 150mA).
For 120V it is about 6.8 to 8uF in most cases.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
