Chips
Components and IC Index
Control IC and component index for SG3525, UC3846, KA3843, KA3845, TL494 and related components.
Records
- SG3525 — PWM control chip used in inverter welder control modules, soft-start, compensation and no-PWM diagnosis.
- UC3846 — Current-mode PWM chip used in inverter welder control boards, peak current feedback, slope compensation and shutdown diagnosis.
- UC3846 / KA3846 — Current-mode PWM control chip family used in inverter welder and plasma control boards.
- UC3843 / KA3843 — Auxiliary power supply PWM chip family used in many inverter welder long-strip boards.
- KA3845 / UC3845 — Auxiliary power startup and PWM control family used in inverter welder supply circuits.
- TL494 — PWM controller used in wire-feed control and some HF start board circuits.
- LM324 / LM358 — Op-amp and comparator families used for current feedback, voltage detection, protection and dual-voltage logic.
- CA3140 — Current-loop amplifier used in SG3525 welder control-board families.
- PC817 / optocouplers — Optocouplers used for feedback, isolation, shutdown, VRD and voltage-detection signal paths.
- IGBT / MOSFET / fast recovery diode — Power-stage and secondary rectifier components used in inverter welders.
How to use this section
Chip pages focus on how generic components are used inside welding machines.