With this circuit of a Popular Electronics from the 90's it is possible to test a diode with the oscilloscope visualizing its characteristic curve. The transformer can have currents starting from 100 mA.
This reaper has the signal limit determined by the zener voltage. We found this circuit in a 1980...
This 1.5 A circuit has the output voltages adjusted by a selector switch. We found it in a Popular...
September 2016 - It can be purchased from Mouser Electronics the new ultraviolet high power LEDs...