Amplifying Stage (CB6127E)

This circuit is from a 1967 publication. The configuration holds true for modern transistors having a feedback across R2.

| Clique na imagem para ampliar |

PC address decoder (CB20536E)
This TTL decoder circuit for PC ports was found in a document from 1992. The power supply can be...
Reversible sequential for LED (CB6945E)
This circuit is from an old Popular Electronics, but it can be easily implemented nowadays, even...
Peak indicator with hysteresis (CB21973E)
The basis of this circuit is a CA3130 operational amplifier. The transistor can be BC548, and the...