This 1 to 40 MHz amplifier is from a 1969 Motorola documentation. The components are of the time but admit modern equivalents.
This old circuit that makes use of germanium transistors, can be modernized with the use of...
The circuit presented was suggested by Texas Instruments in an opto-electronics manual. The...
This 4-digit digital clock for hours and minutes with CMOS integrated circuits was found in a 1995...