DC cooling fan speed controller brainstorming - Reef Central Online Community
2 Channel PC Fan Controller – Microcontroller Based Projects
Variable Regulators
Simple Adjustable Power Supply Using LM317 Voltage Regulator
Updated LM317 fan controller | ThatRaymond.com
The No-MCU Fan Controller | Hackaday
AC/DC 5-16V to 0-15V : Yeeco TY100 LM317 Linear Full-Stage Voltage Regulator Volt Regulated Board Fan Speed Controller Control Switch Governor Governing : Amazon.in: Electronics
Few LM317 Voltage regulator circuits that has a lot of applications