Cable Test (CB25206E)

Found in the March 1989 issue of Radio Electronics magazine, this circuit is used to test printer and other cables. The indication is made by LEDs.

| Clique na imagem para ampliar |

Controller for battery charger (CB9123E)
Found in American documentation from the 1980s, this circuit makes use of components that...
Variable Reluctance Pickup Preamplifier (CB941E)
This circuit was fond in an old publication of the years 1950. The transistors are germanium types and...
256 Sequences Sequential (CB17405E)
We found this circuit in a 2002 documentation. As it uses still common CMOS integrated circuits, it can...