Balanced modulator (CB7927E)

We found this circuit in a 1968 Hughes publication. The components are from the era and can be replaced by modern equivalents.

| Clique na imagem para ampliar |

Call silencer (CB9237E)
This interesting circuit found in American documentation generates a busy signal, without you...
AC Contactor (CB9275E)
In this circuit R1 is 56 ohm and R2 is 220 ohm for the 110 V network. SCRs are according to the...
Operational current source (CB8856E)
We found this circuit in a 70s EDN. The circuit makes use of operational of the time. | Clique na...