Pwm Fan Wiring. It has a broad range of application like in the field of telecommunications audio equipment servo motors etc. Base frequency is 25kHz and it is acceptable from 21kHz to 28kHz.
Output is opened collector and main board must have pull-up resistor to 12V. There is some information out there. F at 10 duty cycle and increasing with temp up to a max of 90 duty cycle at 235 Deg.
This fan did the job.
B AC pressurefan speed. This fan did the job. A Coolant tempfan speed For example 204 Deg. I first tried wiring up the cheaper fan and this one gave me different results.
