This circuit was found in a 1967 documentation. It is intended for triggering a xenon LASER. Observe the high operating voltages of the circuit. The components used are uncommon today.
This test circuit was found in the PE Hobbyst Handbook in a 1990s edition. The circuit tests the...
For fans of sequential systems, here is another one found in a 1983 publication. Two CMOS...
This circuit uses the 2N626, the first commercial Darlington transistor. The transistor activates the...