Friday, January 4, 2013

50W-70W Power Amplifier with 2N3055 & MJ2955

This good detail both circuit diagram ,PCB,part assembly,layout and show case in completed set that you can make with this information for 50 Watts Power Amplifier.


50W-70W Power Amplifier with 2N3055 & MJ2955



50W-70W Power Amplifier with 2N3055 & MJ2955


 


50W-70W Power Amplifier with 2N3055 & MJ2955


 


50W-70W Power Amplifier with 2N3055 & MJ2955


 


50W-70W Power Amplifier with 2N3055 & MJ2955


 


50W-70W Power Amplifier with 2N3055 & MJ2955


Could you read specification thus as below.
Performance



  • Output Power 50 watts into 8O 70 watts into 4O

  • Music Power 77 watts into 8O ;105 watts into 4O

  • Frequency response -1dB at 14Hz and 70kHz (at 1W- see Fig.1)

  • Input sensitivity 0.875V for 50O into 8O

  • Harmonic distortion <.05% from 20Hz to 20kHz; typically <.003%

  • Signal-to-Noise Ratio -114dB unweighted (22Hz to 22kHz); -119dB A-weighted, both with respect to 50W into 8O

  • Damping factor >140dB at 100Hz & 1kHz, with respect to 8O and without PTC thermistor

  • Protection fuses plus “Polyswitch” PTC thermistor



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