We found this circuit in a 1964 Electronic Design. Transistors can be modern general-purpose equivalents. The circuit converts a 1 MHz sinusoidal signal into a rectangular signal.
This interesting shield circuit was obtained from a Poptronics of February 2001. The American...
This circuit was obtained in a 1998 documentation. It is a small low frequency signal generator with...
This circuit causes an incandescent lamp to flash according to the input audio signal. The SCR...