11-11-2014, 11:16 AM
Mike
Human capacitance varies with surroundings but typically is estimated to be within few tens to a couple of hundreds of pF which is very, very low, the human ESDA body model being 100pF+1.5kOhm.
Obviously when one stands close to a large metal grounded object like a fridge or something, or a slab foundation (or basement floor) close to Earth surface the capacitance will somewhat increase, but at 60Hz you have to have about 20nF capacitance to start feeling the current (1mA AC or so).
Which is why I asked where the radio is situated. Because while operating a truly Hot Chassis models (the two I did for Kirk) without knobs and plugged directly into Mains in my house on the second floor, I did not feel squat while tuning or turning on the radio, not before or after it was turned on.
Human capacitance varies with surroundings but typically is estimated to be within few tens to a couple of hundreds of pF which is very, very low, the human ESDA body model being 100pF+1.5kOhm.
Obviously when one stands close to a large metal grounded object like a fridge or something, or a slab foundation (or basement floor) close to Earth surface the capacitance will somewhat increase, but at 60Hz you have to have about 20nF capacitance to start feeling the current (1mA AC or so).
Which is why I asked where the radio is situated. Because while operating a truly Hot Chassis models (the two I did for Kirk) without knobs and plugged directly into Mains in my house on the second floor, I did not feel squat while tuning or turning on the radio, not before or after it was turned on.
