The PT2125 is a fan controller that adds two toggle outputs for swing head control, rhythm wind, and buzzer functions to the PT2124. It includes CMOS technology, a 4‑step timer scale with three wind‑speed states, a 2‑second middle‑wind start‑up, and an auto‑countdown timer displayed on LEDs.
The document details the pin configuration, application circuit diagrams, power‑supply requirements, parts list, and ordering codes for various DIP packages. It also lists the selectable base‑frequency inputs (32768 Hz crystal or 50/60 Hz AC) and provides typical component values for implementation.
| Technology | CMOS |
|---|---|
| Timer scale | 4‑step |
| Wind speed states | 3‑state |
| Middle wind start‑up | 2 seconds |
| Toggle inputs/outputs | 2 sets |
| Buzzer function | Enabled |
| LED display | Auto countdown timer control |
| Base frequency input | 32768 Hz or 50/60 Hz |
| Package type | 20‑pin DIP |
It can use either a 32768 Hz crystal or a 50/60 Hz AC line frequency as the base input.
The PT2125 provides two toggle outputs for swing head control, rhythm wind, and buzzer functions.
The PT2125 is offered in several DIP packages, including 8‑pin, 16‑pin, and 20‑pin versions.