Interface (CB7251E)

This interface or shield circuit provides an output 1 from 3.3 V logic. The circuit is from old Optical Electronics documentation.

| Clique na imagem para ampliar |

Solar radio (CIR21939E)
This primitive solar radio was found in a Gernsback publication from 1960. The transistor is made...
Christmas Light Effect (CB17056E)
We found this circuit in a 1995 documentation. It drives 4 sets of colored incandescent lamps that...
VHF Transmitter (CB1564E )
The small transmitter shown in the figure can generate signals in the range of 50 MHz to 200 MHz....