Line pulse extractor (CB9416E)

This circuit for analog TV was found in a 90s EDN. The integrated circuits used are from that time and may present some difficulty in obtaining.

| Clique na imagem para ampliar |

Headphone Extensions (CB23790E)
The figure shows three circuits for using headphones in amplifiers with speakers that do not have...
Nicad charger (CB9540E)
In this charger, the charging current is basically limited by the LEDs. The transformer is a low...
Fast Voltage Follower (CB4904E)
This configuration is from an old integrated circuit manual. The circuit can be applied to modern...