454Views5Replies

Author Options:

Splitting an audio signal on a PCB - Doides required? Answered

I have a 3.5mm audio jack on a PCB.  I want to split the signal to go to two different places on a PCB.  Do I need a diode on each "branch" or literally just split them in a T with no components in between?

Discussions

0
steveastrouk
steveastrouk

9 years ago

You'd not use diodes. What are you putting the signals to ?

0
Joe426
Joe426

Answer 9 years ago

The signal is split to a VU meter and a Color Organ.

0
steveastrouk
steveastrouk

Answer 9 years ago

If the input resistance of the meter and organ aren't pretty high, then buffer the signal - use a "unity-gain buffer" made with an op amp to do it.

Steve

0
orksecurity
orksecurity

Answer 9 years ago

+1.

0
Quercus austrina
Quercus austrina

9 years ago

Split it ("T") and probably use a buffer or amplifier per branch in order to correctly driver each individual object. Color organ will need more drive than a VU meter. You might even need to attenuate the signal for the VU meter depending on it's sensitivity. No diodes needed.

Qa