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Author: Admin | 2025-04-28
This article was written by Thanosmining, please indicate the original author when reprinting. Misappropriation or use for commercial purposes is prohibited without the permission of the company.There are many types of fan speed simulators (simulators), how to choose? What is the functional difference?Help customers get a comprehensive understanding through the selection guide of the fan speed simulator (simulator).1. Definition of fan interface: All cooling fans (including CPU, graphics card, mining machine) are defined according to the PWM standard interface, that is, the black wire (GND, ground wire, usually connected to the negative pole), the red wire (VCC, positive pole), 12V) , yellow line (SENSE, signal, speed line), blue line (CTRL, control line).Actually, they have 3 kinds of lines:1: Two-wire fan (black, red): Simple and rude, there is no speed measurement function, and the speed can only be achieved by controlling the voltage. Generally used in case fans to dissipate heat.2: Three-wire fan (black, red, yellow): increase the speed measurement line, which can detect the speed of the fan, but it cannot realize the speed of the speed. It is generally used in case fans to dissipate heat, and early motherboard CPUs dissipate heat.3: Four-wire fan (black, red, yellow, blue): increase the control line, the speed can be achieved through the PWM signal. New CPU fans, graphics cards, and Miner fans all use this interface.——————Although Miner fans all use four-wire fans, the shape is also different:The first of these is the most commonly used (about 95% of the models are connectors of this shape)Fan simulator (simulator): The purpose of using the fan simulator (simulator) is to reduce noise and noise, and use other low-noise equipment to dissipate heat: such as water cooling, air cooling, and liquid cooling.However, Miner still needs to detect whether there is a fan on the original fan interface, and most Miners need a speed PWM signal when starting. Therefore, when designing a fan simulator (simulator), the startup signal and speed parameters must be guaranteed to make the Miner run normally.Types of Fan Simulators: Fixed Speed Version and Full Speed Version:Fixed-speed version (also called three-line version): Through the above knowledge, the three-line simulator can only achieve constant speed (lack of control lines), which is generally fixed at 5000-6000 rpm. The implementation method is simple, the cost is low, there is no need to detect the PWM signal line, and one-to-two can be realized by parallel operation (that is, one simulator is connected to multiple fan interfaces, which are actually connected in parallel).Its disadvantages are: Miner designs are all four-wire, and the fixed-speed version only connects to three-wire. Some Miners cannot detect the PWM control line, so they cannot work, that is, the compatibility is poor and unstable.Fan Simulator,
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