what value of inductive reactance is needed to block 80Mhz signal from the power supply! here is a circuit for reference " https://www.flickr.com/photos/aj_silverthunder/4140932373/ ".
is 50K inductive reactance of the choke is able to block the 80Mhz signal fron the power supply in the given schematic!
How much attenuation (in dB) can be regarded as "blocking" in your opinion? Why?
Did you check which reactance amount can be achieved with available components (e.g. by reading a datasheet)?
my doubt is that i want to calculate the value of the choke which can block 80Mhz RF signals from entering to the other circuit with a help of the formula!.like this " https://www.flickr.com/photos/aj_silverthunder/4140932373/ ".
so i need all u r help guys!
Yes, but you didn't specify how much "blocking" would be required. I guess, you didn't even think about, if a choke is required at all,
if the existing series resistor can provide sufficient attenuation of RF, or if and why a certain RF level can be expected as problematic
for the circuit. You actually know very little about the said circuit.
50k inductive reactance at 80 MHz is ridiculous...