The remote control paratactic volume control

[ilimzn]

Is it just me or does it look far too complicated for what it needs to do? It's not too diufficult to make an attenuator that has 2^N steps (N being the number of relay contacts), and has any dB per step value you want, using 2*N + 1 resistors, that also has constant output and input resistance regardless of the setting, and can be driven by a binary combination to address the attenuation needed, dirtectly?

[Gordy]

OK, let's revive this post...

Originally posted by ilimzn
Is it just me or does it look far too complicated for what it needs to do? It's not too diufficult to make an attenuator that has 2^N steps (N being the number of relay contacts), and has any dB per step value you want, using 2*N + 1 resistors, that also has constant output and input resistance regardless of the setting, and can be driven by a binary combination to address the attenuation needed, dirtectly?

Can someone (ilimzn perhaps) please guide me to a circuit for this " 2^N steps (N being the number of relay contacts), and has any dB per step value you want, using 2*N + 1 resistors, that also has constant output and input resistance regardless of the setting, and can be driven by a binary combination " type of volume control / attenuator.

I would appreciate the circuit for the control system as well as the attenuator.

Many thanks.

[Arlo]

it seems a series type volume control.

how about to build a shunt type?
but shunt type volume control needs twice of relay and resistor.
i have a todo plan to build a shunt type volumen control using
bit map control. anyone have interesting?

[CeramicMan]

Create a reed switch controller using a flash ADC with any analog voltage sensing on the input... even an ordinary volume pot?