Using the LM3914 this unusual digital clock uses a Bargraph LED indicator. The LEDs are the segments of a 7-segment display. We found it in February 1980 Radio Electronics magazine.
This circuit was found in a 1982 documentation. It uses only one integrated circuit and can be...
Only those who know the secret activation code will be able to turn on the device connected to...
This 2 meter (144 MHz) preamplifier is intended for use with portable transceivers. The...