> You have the facilities to do it, and you have the test equipment > to prove it. I'll let you do the work.
> The time constant equation is the same, if you put the capacitor > in front or behind the resistor. In fact: You could put a 7.5K > in front of, and a 7.5K behind the capacitor to ground, and you > should get the same time constant, roll off, de-emphasis. Of the described circuit parts only yes... of the same circuit placed in operation with other parts like the discriminator circuit no. > I have never tried it. Here's the deal. You build it and test > it, and if you can make the de-emphasis different by placing the > resistor before, after, or splitting them with 7.5K resistors on > both sides, I will send you a crisp one hundred dollar bill > ($100) in the mail. Based on the impedance of the adjacent connections, you might be mailing that money in some examples. Just depends on how nit picky he or you want to be... > I've never done it - but where I went to school, it shouldn't > matter. It does when the parts are placed into actual/real circuits. > Let us all know what you find. If you find a difference, I'll > send you $100. Of course, I'm going to be out $100, but then > I'm going to go build it myself and make sure you're not > fibbing! :-) > Bill Hudson > W6CBS In the previous example circuit with a left side placed resistor as Ken and I described a disriminator circuit with low impedance output vs a high impedance output (followed by a typical voltage amplifier) should have a difference "shifted" frequency response. Keep the money... buy us a Braut at Datyon... cheers, skipp
