This circuit generates control signals for stepper motors. We found it in a 90s Popular Electronics. The power can be made with a 5 V supply so that it works as a shield.
This low voltage circuit that generates sine signals was obtained from a Texas Instruments integrated...
This circuit was found in a 1977 publication for radio amateurs. Transistors are common...
Using a ceramic resonator, it is possible to vary the frequency between 4.9 MHz and 5 MHz. The...