| ??? 10/03/06 21:16 Read: times |
#125762 - Hey Darren Responding to: ???'s previous message |
Darren Heywood said:
Is electrical power a function of its frequency?.... In some circuit topologies, yes it is. In others it isn't. Try feeding a PWM clock signal into a JK f/f in toggle mode, then look with your scope at the duty cycle comming out of Q and /Q, the last time I looked, the duty cycle was 50% exactly, secondly, as I increased the frequency... the supply current does not go up or down, You abviously have not done this experiment because the power consumed by the JK flip flop WILL increase with frequency. I challenge you go do this experiment and report back with actual measurements. if it did then surely there must be same law that says it should, discarding hf performance efficiencies that are a different matter. There is, it is called the speed power product and it has been explained interminably to you. Logic chips are getting faster year on year, but the supply current consumption appears to be getting less and less, i.e., effeciency is getting better, how would you account for this?.. With ease but I am afraid I am unable to explain it in a way that you would be able to understand. Ian |
