ringram2077
New member
I have my Teensy SDR working nicely. All packaged up in #D printed enclosure.
Well I got a little careless today and plugged the Audio Adapter headphone output into a powered speaker. That's when death occurred. Don't connect VGND to GND as stated on back of board. This is what happened when I plugged in the powered speaker. I have been using a small battery powered speaker which works great but the battery ran down and led to the goof up.
Question is could the headphone output be isolated with a small transformer to prevent getting GND and VGND crossed?
Richard
Well I got a little careless today and plugged the Audio Adapter headphone output into a powered speaker. That's when death occurred. Don't connect VGND to GND as stated on back of board. This is what happened when I plugged in the powered speaker. I have been using a small battery powered speaker which works great but the battery ran down and led to the goof up.
Question is could the headphone output be isolated with a small transformer to prevent getting GND and VGND crossed?
Richard