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I having a circuit is equip with isolate dc dc 24v to 5v to power my embedded circuit. The distance from power supply to my circuit is 50m (out door). What kind of device i should choose for protection: mov, tvs, efuse, gas tube..
I need dual isolated power supply 12V and 5V. I intend to use dual output power supply +12V -12V. In the -12V I connected inverse polarity and using Dc/DC to make +12V and +5V isolated?
is it possible?
When design RJ45, they having pin for shielding. I look for some design they connect to some of variations:
1. Inductor to GND.
2. resistor 1M // cap 100nF to GND
3. 0hm // cap 100nF to GND
4. 100nF cap only.
5. Connect to GND.
Which connection is correct? and why?
The rectifier connect to secondary side of the transformer. You know that inrush current by charging capacitor after diode bridge, and I want to limit..them.
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Rating 12Vac x30A. I understand that even we dont need irush current if the fuse able to sustain?
My circuit including toroid transformer from 220V to 12VAC. I need implement irrush current circuit, but I wonder to implement before toroid transformer or after rectifier diode bridge? which is better.
I understand this, as someone answer before we able to design to meet junction temp is 174.9 deg, and the bigger heatsink make the fet top case less thermal (low temperature). So the right anwer I think is here, base on Junction- packaga thermal dispassion we will estimate the top case temp.