Bath control (CB21373E)

This hydromassage circuit was found in a 1967 General Electric publication. The SCR is according to the power of the heating element.

| Clique na imagem para ampliar |

Timer CA3018 (CB24071E)
This application of the RCA integrated circuit released at the time was found in the August 1970...
Logic Probes (CB11569E)
This circuit indicates the logical level of a CMOS circuit, extracting the power from the circuit...
10W Transistor Amplifier (CB1319E)
In this amplifier, the supply voltage is 35 V and the input resistance is 2k2. Equivalent...