(Suggestion on) Testing power amplifiers according to IEC 60268-3 standard

[restorer-john]

@pma

There's a new version (early access) of Picoscope T&M version 7. Quite different. Check it out.

 

[pkane]

@pma

There's a new version (early access) of Picoscope T&M version 7. Quite different. Check it out.

View attachment 272714

Try the dark mode, too

 

[pma]

There's a new version (early access) of Picoscope T&M version 7. Quite different. Check it out.

Thank you John, installed!

 

[pma]

Measurement of burst power, 20kHz sine burst, A250W4R class AB amplifier, load 4ohm//2.2uF, 2.68 ohm modulus at 20kHz and phase angle -48°. Power = 297W/4ohm, but 443W/2.68ohm.

The burst is digitally generated by Topping D10s at Fs=96kHz, thus the ringing at the beginning and at the end of the burst. Please also note the sharp cut of spectrum above DAC Fs/2 (48kHz).

More here.