Found in a Philips' 1968 documentation, this circuit is slightly different from the previous one. The components are also from the era, and modern equivalents can be used.
This low-pass filter with 741 op and symmetrical source was found in the August 1993 issue of...
We found this circuit in the 2005 Linear Technology component manual. The circuit can be used as a...
This circuit provides voltages and a 1 kHz signal for measurement bridges. The circuit is from...