Found in the 1989 Radio Electronics Experimenter special edition, this circuit was designed for assembly with SMD components. The printed circuit board was provided.
A frequency divider for digital signals can be constructed based on a single 4018 integrated...
This transmitter emits a modulated signal at a frequency given by the first transistor in the...
The figure shows how to use an LM3914 with a variable range moving point. The circuit has an...