Battery charger (CB9121E)

Found in an Electronics Now from the 1980s, this circuit uses some components that are still common today. For others, equivalents can be tested.

| Clique na imagem para ampliar |

Time relay (CB22074E)
The transistor in this circuit can be replaced with any general-purpose equivalent. The time...
Compatible RS-232 Line Receiver (CB15489E)
In the figure we present a circuit that has an insulation voltage of 2,500 V at 60 Hz and...
Coaxial Cable Driver (CB14334E)
The circuit shown is based on National Semiconductor buffers and was found in the 1994 Linear...