Tl494 Circuit Diagram [best] Official

The TL494 is a fixed‑frequency pulse‑width modulation (PWM) control IC, designed for switch‑mode power supplies (SMPS). It includes:

Below are three practical schematics. Component values are included for common frequencies (typically 50kHz to 100kHz). tl494 circuit diagram

To get the chip running, you need to set its internal frequency. This is done with a resistor ( RTcap R sub cap T ) on Pin 6 and a capacitor ( CTcap C sub cap T ) on Pin 5. tl494 circuit diagram