Tagged Questions

1
vote
2answers
155 views

AC coupling with

I've the following amplifier circuit: The two BDX77 are actually a single darlington BDX53C (I do not have the spice model for it), and the same for the two BDX78 (a single BDX54C). It sounds ...
3
votes
1answer
197 views

How do i switch small AC signal on/off electrically

Suppose, i have an audio signal source. I want to connect and disconnect it to amplifier electrically (for example controlled by another source, like microcontroller, sensor, 555, etc). I don't want ...
1
vote
2answers
149 views

Is it possible to specify an equivalent RLC network for a loudspeaker?

Can an RLC network be defined that would behave in the same way as a theoretical loudspeaker? Since their behavior is frequency-dependent, would the values of R, L, and C also be frequency-dependent?
0
votes
2answers
136 views

Cheap visual indicator for a PA loudspeaker line

I have a PA system which is outputting at most 200Vrms AC peak, around 100Vrms AC nominal, from the transformer. The current is around 4Arms. Since the system is comprised of 12 output transformers, ...