Hi All,

Are there any ready-made multiplexer/demultiplexer boards available on the market? I'm looking for an application where I would like to pass a signal to one of the 12 piezoelectric patches placed at different locations on a structure (either by a push button or a control signal). Instead of building one from scratch, I'm looking for something to purchase off-shelf. I searched online and found one from a company, but they are asking me to purchase a DAQ board along with it (which I don't want).

The voltage signals of interest would be in the range of Vpp 20V and less than 500kHz.

Is such a product available?

Best,
Shiva

 

Why don't you give us some actual signal, actuator, power, voltage specifications of this mythical ready-made multiplexer/demultiplexer so we can have some sort of idea of what you need.

 

Why don't you give us some actual signal, actuator, power, voltage specifications of this mythical ready-made multiplexer/demultiplexer so we can have some sort of idea of what you need.

I've edited the query to include the info. I'll use voltage signals of 20V (Vpp) and freq not exceeding 500 kHz to excite piezoelectric patches.

 

How much current?

Unidirectional?

How often does it need to be able to switch?

Single-ended or differential signals?

 

How much current?

Unidirectional?

How often does it need to be able to switch?

Single-ended or differential signals?

Single-ended voltage, Unidirectional (Demultiplexing), Switching (changing channels) desired at least 1 second or less. Regarding current requirements, I'm not sure. Piezoelectric patches are capacitive loads and don't require a high driving current.

 

"National Instruments"can probably help, but I abandoned them years ago as horribly expensive.
I am guessing that the multiplexer would be computer controlled.
There is a company that makes what you need but the name eludes me now.

 

"National Instruments"can probably help, but I abandoned them years ago as horribly expensive.
I am guessing that the multiplexer would be computer controlled.
There is a company that makes what you need but the name eludes me now.

Thanks.

I just saw the NI modules; They are expensive.
I also found something from Keithley.