Process control interface (CB7831E)

This shield was found in a 90’s Popular Electronics. The circuit can be implemented with modern equivalent circuits.

| Clique na imagem para ampliar |

BCD Decoder (CB25829E)
This circuit is interesting for experiments and can be part of the bench in the form of a module. The...
AC and DC High Current Meter (CB4463E)
This is a shunt circuit to be used on a multimeter, expanding its scales to measure high currents....
The ZN414 arrives (CB24290E)
This integrated circuit made it possible to build simple radios with few external components. It...