Programmable-active-filters


Posted on May 14, 2012

This is a second-order, low-pass filter with programmable cutoff frequency. This circuit should be driven from a low-source impedance since there are paths from the output to the input through the unselected networks. Virtually any filter function which can be constructed with a conventional op amp can be made programmable with the HA-2400.


Programmable-active-filters
Click here to download the full size of the above Circuit.

A useful variation would be to wire one channel as a unity gain amplifier, so that one could select the unfiltered signal, or the same signal filtered in various manners. These could be cascaded to provide a wide variety of programmable filter functions.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Pedalboard Power Supply
one wire keypad with PIC16F88
7 MHz VFO
High-torque motor speed control
Complete Ar/Kr Ion Laser Power Supply Schematics
led chaser provides three game
Preamp using the current series feedback circuit



Top