This 1975 tachometer for cars with platinum can serve as an idea for new projects. The components are from the era and a modern equivalent operational amplifier can be used.
This is the receiver for the CB18476E, but it can be used with other transmitters found on the...
This circuit was found in Radio Electronics from the 90s. The CMOS integrated circuit is a PLL not...
This circuit was found in a 1990 Electronics World magazine. The circuit can be mounted today by...