Considering the url attached what should be the power ratings of the resistors ?

[munzir]

Considering the url of attached image what should be the power ratings of the resistors ?



ThankXXX

 

[chuckey]

Are you serious? it depends on what voltage the pulse is and how often/long it occurs. It is not likely to be critical .25W?
Frank

 

[munzir]

so of what power rating should i use the resistor ?
Or if its different then tell me the way to calculate the power rating of the resistor used in this circuitry ???

 

[chuckey]

You work out the voltage drop across it, call it V, then the power dissipated would be v^2/R, but the pulse is only there for 1/nth of the time, so the power dissipated is V^2/(R X n) W.
Frank

 

[jimmy45]

haaaaaaaaaaaaaa*-*-*-*-*-*-*-
-*****

 

[munzir]

How long would the pulse be there ? What's the time then ?