| ??? 12/05/09 21:49 Read: times |
#171474 - Memory lapse? Responding to: ???'s previous message |
Richard Erlacher said:
When you make an assertion, you should be prepared to support it. I repeatedly invited you to show where my assertion that you couldn't generate a precisely constant current without a precisely regulated voltage was incorrect, but you refused to do that. I Why? I didn't say that a constant current source that incorporated an integrated voltage control or reference of some sort had to be fed by a precisely regulated voltage, and I knew that there were devices that used internal zener, bandgap reference, current mirror, or other ways of creating that voltage. I think your memory is playing you a practical joke. Yes, you did imply that a constant current source had to be fed by a precisely regulated voltage. Or why else did you challenge Erik with: "If that were the case then that device would work fine with a Vled that was a 24 volt p-p sinusoid centered about an 11-volt DC level [...]" Just to try to twist the knife, you went all the way and challenged with negative input voltages... |
