In adding an alternative cutter drive motor (‘spindle’) to an existing cnc machine, an electrically isolated pwm to analogue converter is needed. The machine uses a ‘grbl’ controller, which has an ...

Cooling fans are widely used and are extremely important in electronic devices, especially for those constantly running. That includes power supplies, servers, computers, and telecommunication ...

A good way to reduce acoustic noise in a system is to adjust the cooling-fan speed as a function of temperature. The standard way to do that (shown in simplified form in Figure 1) includes an IC that ...

The simplest of fan-control schemes an on-off switch is simple but inefficient, because it provides more cooling than necessary most of the time. When The simplest of fan-control schemes — an on-off ...

It's recently occurred that I need to drive more fans than my motherboard has fan headers. These are four-pin PWM fans and the motherboard headers are also four-pin. As I understand it, the pins are ...