Unit gain audio mixer (CB7987E)

Found in a 90’s American publication, this circuit has a voltage gain close to 1, as shown in the formulas. The power supply must be symmetrical.

SSB Transmitter for the 11 meters band (CB4048E)
We found this transmitter in 1980s documentation. Coil data is found next to the diagram and...
Monostable Using the 4528 (I) (CB132E)
The 4528 is a dual-retriggerable monostable that needs only the timing network formed by R and C...
Line pulse extractor (CB9416E)
This circuit for analog TV was found in a 90s EDN. The integrated circuits used are from that time...