Video modulator (CB7170E)

Found in an old Radio Electronics, this circuit is intended for the modulation of composite video signals for application in old analog TV receivers.

| Clique na imagem para ampliar |

Crystal Signal Generator (CB6189E)
This QST circuit generates 4 frequency signals according to the crystals used. Transistors admit...
Ring Launcher (CB7805E)
This countdown electromagnetic ring launcher was found in an Electronic Hobbyst Handbook from...
Beat frequency indicator (CB9814E)
This TTL circuit was found in an American documentation from the 80s. The components are common in the...