Product detector (CB9684E)

Found in Motorola documentation from the 1980s, this circuit employs an integrated device from that time, which is unusual today.

| Clique na imagem para ampliar |

Common base transformer stage (CB22223E)
Found in an old American documentation, this step has as input and output transformers coupling. Two...
5V power supply (CB21176E)
In the figure we have a simple 5 V power supply obtained from an American documentation from the...
Current to frequency converter (CB9604E)
Found in a manufacturer documentation from the 90s, this circuit makes use of period components. The...