This circuit, which can be used as a shield, was found in Radio Electronics from the 90s. The operating circuit can be replaced by a lower voltage equivalent.
We found this configuration in a Radio Shack documentation from 1977. Here we have the way to...
In this oscillator a phase shift network formed by C1, C2, C3 and R1, R3, R4 determine the fase...
This filter was found in Texas Instruments documentation from the 1980s. The circuit uses a common...