Full Member level 4
Why drop 24V to 5V for 5V fan.
- Select a 24Vdc fan.
- Delete 5V linear Reg as it will waste almost 4x power as the fan.
- Use Nch-FET with Thermistor bias on hot spot.set to 50'C over 5'C range. with low side regulation.
- 2 fans are more reliable than 1.
- Use PC-film plenum to control air flow over hot spots for low RPM but max linear surface speed over hotspot.
I have updated the schematic.