All Questions
6
questions
1
vote
1
answer
112
views
Arduino's impedance in breadboard circuit
(Warning, as this is a long question, asked by students that don't know what they're doing. Perhaps our questions are too general and can't be answered but at this point we'll take all the help we can ...
11
votes
1
answer
2k
views
What is the technical difference between audio CD-R(W) and data CD-R(W) discs?
I just repaired a Sony RCD-W100 CD-recorder and want to test the recorder functionality. The manual 'says' I can only use audio CD-R(W) discs. Never heard of CD-R(W) discs just for audio. On the ...
- 1,367
22
votes
1
answer
2k
views
Optical audio transmitter can't handle speech
This is a question relating to my project on an optical audio transmitter.
I wired up a very simple device in which I use an audio signal transformer (EI14) to modulate the intensity of a laser beam (...
- 255
3
votes
3
answers
246
views
Improving the quality of an optical audio transmitter
I wired up a very simple device in which I use an audio signal transformer (EI14) to modulate the intensity of a laser beam (a cheap 650nm, 5mW diode) according to the audio output of my phone. The ...
- 255
0
votes
0
answers
102
views
Individually modulate two lasers diodes using sound - while using the same power suppy and preventing signal "bleed over"
I'm trying to individually modulate two lasers diodes using the same power supply. The modulation for each laser module is created by the left and right audio channels. Is there a way to do this ...
- 205
0
votes
1
answer
183
views
Power a laser from Arduino using a audio cable/ jack plug?
I want to power a laser from an Arduino, and have a connection between a phototransistor.
A easy connection seems to me a audio cable with a jack plug.
Is this possible? Power consumption of the ...
- 13