Neon Divider (CB6835E)

Found in ancient American documentation, this circuit produces a pulse every 8 Hz of a 400 Hz signal.

| Clique na imagem para ampliar |

Overvoltage protection (CB8360E)
Found in a 1960 General Electric documentation, this crowbar circuit blows the fuse in case of...
Crystal Tester (CB24174E)
This circuit was originally designed for testing crystals used in color televisions, but it works...
Test circuit with bridge (CB22530E)
This bridge-biased transistor test circuit measures gain in the range 0 to 300. Circuit is from...