Hi there -
I've been looking through the forum back catalog and the many, many websites out there...but I haven't figured out what the issue is yet.
I'm using a simple LED NPN transistor driver - this circuit, identically: http://www.learningaboutelectronics.com/images/LED-driver-circuit.png
But the audio signal is "line level", around 1v, and the LED is connect to +5v and ground. The LED stays illuminated at all times.
My goal is to use an audio signal, with as little circuitry as possible, to fully drive an LED. Is there a solution?
I've been looking through the forum back catalog and the many, many websites out there...but I haven't figured out what the issue is yet.
I'm using a simple LED NPN transistor driver - this circuit, identically: http://www.learningaboutelectronics.com/images/LED-driver-circuit.png
But the audio signal is "line level", around 1v, and the LED is connect to +5v and ground. The LED stays illuminated at all times.
My goal is to use an audio signal, with as little circuitry as possible, to fully drive an LED. Is there a solution?