Differential Amplifier (CB6546E)

This circuit was found in an American publication from 1968. The transistors are from the time, but it can be made from modern transistors.

| Clique na imagem para ampliar |

Call indicator (CB7235E)
We found this circuit in an old neon lamp application manual. The circuit stores a call. The...
Automatic Headlight Shutdown (CB15100E)
Poptronics recommends this circuit for use in the car when the headlights are left on. The circuit...
Random Neon Flasher (CB14780E)
We found this circuit in a 1981 publication, when it was still possible to find 22.5 V batteries (used...