Next tests are done. Same frequencys (between 1 and 40khz) as earlier. Same water. New water. With and without Naoh.
I used a 2n3055 transistor, which is ofcourse a different type of switch. No fancy diodes build etc.
As you can see, the voltage starts with a ring and thats what i also saw on the FET. However, the effect lasted very shortly with the FET.
The second interesting observation is that at the start of the off periode, you see a big/hugh negative dip on the scope. Thats exactly the same as with the FET, but someway the FET is demping the dip and that results in that nice ringing.
The transistor doesnt have all those demping diode stuff.
The question is now: Where does that hugh dip come from?
Is that the dip Stan Meyer was extracting?
More to come.
Steve
Ps,
The other picture was taken with the same 2n3055 but higher in frequency ( ca. 1mhz). That took the first ringing in an upwards wave and as soon as that ring was done, the off time started of the 50% DUTY.