Beam Communicator (CB25533E)

This circuit was found in the December 1992 Radio Electronics magazine. Range depends on optical capabilities and also weather conditions.

| Clique na imagem para ampliar |

Electronic Stimulator (CB21647E)
This circuit is from a documentation from the 60s. The circuit can be built with transistors like...
Table dimmer (CB7220E)
Found in a 1966 General Electric documentation, this dimmer should only be used with incandescent...
Relay Control shield or interface (CB15483E)
To control relays safely with double insulation, we suggest the circuit in the figure. The optical...