Optical fiber receiver (CB9736E)

This high sensitivity receiver of 30 nW was found in documentation from the 1980s. Integrated circuits are from that time.

| Clique na imagem para ampliar |

CW practice oscillator (CB7316E)
This circuit is from American documentation from the 90s. The configuration is very current and can...
Power Supply Monitor (CB14972E)
This circuit trips when the voltage set in the pot is exceeded. The tone depends on C3 and...
Simple Logic Probe (CB5911E)
This circuit uses only two general purpose transistors and can be powered by the circuit under...