Recently I was try to rectify the output of an “electronic transformer” using an ordinary rectifier diode 1N4007. The output of this device is bursts of frequency around 50kHz, with an envelope of 100Hz and RMS 15Volt measured by scope.
Under these conditions, why does the diode become extremely hot even with a pure ohmic load that requires just 120mA?
Also, what is the effect is we are use a fast-diode to rectify a low frequency waveform i.e. 50~160Hz.