MOSFET RF Amplifier (CB9174E)

This circuit for dual-gate MOSFET was found in a 90’s Popular Electronics. The coils are according to the frequency range that must be amplified.

| 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...