4-band microammeter (CB8210E)

Found in a 90s Radio Electronics this circuit requires precision resistors in the dividing network. The font must be symmetrical.

| Clique na imagem para ampliar |

Debouncer with transistor (CB21263E)
The circuit shown was found in American documentation from the 1990s. The transistor can be of any...
Superheteredyne MW Receiver (CB962E)
This circuit, found in a 1958 magazine, is for reference only, since the components are not easy...
Symmetric 12 V x 80 mA Power Supply (CB13356E)
We found this circuit in a 1976 technical documentation, but it can be assembled with modern...