Found in the February 1990 Radio Electronics issue, this sophisticated 100 MHz probe uses a period display module. The circuit has an external power supply.
This version of a mixer with a transistor appears elsewhere in this section and on this website. The...
We found this timer circuit in an American documentation from the 1980s. The circuit uses the 6 V...
This strobe light circuit for car spot adjustment dates to 1987, when there were no electronic resources...