JFET Stands in For Triode in This Infinite Impedance Detector - An “Infinite Impedance Detector” might sound a little like something that [Zaphod ... - https://hackaday.com/2023/02/10/jfet-stands-in-for-triode-in-this-infinite-impedance-detector/ #thermionicemission #demodulation #radiohacks #detector #triode #jfet #am #if #rf