This circuit was found in a 1967 US documentation. The circuit applies to modern general purpose transistors. The circuit has no offset. The power supply must be symmetrical.
Using two 741 operational amplifiers, this low-pass circuit has a cutoff frequency of 10 kHz. We...
This circuit was obtained in Motorola documentation from 1969. The components are from that time. In...
Found in an Electronic Design from the 90's, this circuit indicates three voltage levels by...