AMPLIFIER-SPEAKER

 AMPLIFIER-SPEAKER

Features:

  • Accepts stereo input from a standard 3.5mm plug
  • Volume control knob
  • On/Off toggle switch (to retain previous volume setting)
  • Blue LED power on indicator
  • Beautiful finished wood cabinet
  • Uses one 9v battery
  • Accommodates Amazon Kindle tablet

Note: Click on images to enlarge
Schematic Diagram

Internal view

Circuit Board (top view)

Circuit Board (bottom view)

Front View

Back View


                                            Click play to hear demo


                                                    It can play funny novelty songs!


Input and output waveforms


Measured Frequency Response