Just thinking about this. I remember that the transconductance of JFETS varies quite a bit so the fact that the signals are not symetrical might be due to an imbalance in the device characteristics?
On 28/02/2014 3:29 PM, Mark G0MGX wrote:
Hi JoeThe 'scope was connected to the drains using a x10 probe - they were still connected to the transformers in circuit. The overall output at the IF port didn't change with the 'scope connected as the SA was monitoring throughout.Mark On 28/02/2014 19:24, Joe Street wrote:When looking at the drain voltages with the scope did you give a load resistance to the drains or was it just the scope input?On 28/02/2014 1:41 PM, Mark G0MGX wrote:Hi TeamI've been threatening to have a fiddle with the KISS mixer for a while, and here are the results of my first bash:http://g0mgx.blogspot.co.uk/2014/02/kiss-mixer-musings.htmlI don't understand the 'scope signals on the drains of my FETs and I certainly don't understand the voltages I am reading on the sources (my sources are together and connected to the bias supply). The power end of the 4K7 to the FET bias adjusts from 0 to 5V as expected by I am reading -ve voltage on the sources themselves.Please take a look at the link and then any volunteers who can try and explain this to me most welcome!Mark G0MGX
