This basic circuit uses a pair of complementary discrete transistors to boost the output swing of a lower-voltage op amp - Preview and Download
![operational amplifier - Op-amp voltage boost circuit : how does it work? - Electrical Engineering Stack Exchange operational amplifier - Op-amp voltage boost circuit : how does it work? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/w8cDe.png)
operational amplifier - Op-amp voltage boost circuit : how does it work? - Electrical Engineering Stack Exchange
![operational amplifier - Attenuation in current booster circuit with op-amp - Electrical Engineering Stack Exchange operational amplifier - Attenuation in current booster circuit with op-amp - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/TS6r4.png)