This circuit was found in ancient American documentation. Equivalent operational amplifiers can be used. The power supply must be symmetrical. The circuit provides an average output.
This simple 555 component tester was found in the November 1992 issue of Radio Electronics...
This circuit is from a 1977 technical documentation. Diodes D1 and D2 can be 1N34 or any other of...
This circuit can be used in a power grid remote control project with the coil according to the...