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.
Found on a Radio Electronics, but also on other sources and placed elsewhere in this section, this low...
The circuit in the figure is very interesting because it simulates an SCR triggered by light. When...
Q1 can be a BC548 and Q2 a TIP32 for currents up to 2 A. This circuit was found in an English...