All Questions
14
questions
0
votes
2
answers
61
views
Heatsink can cause a shortcircuit what kind of problem occurs?
I'm not sure what will happen in this kind of scenario I'll share the photo of two diodes and basic connections below.
These two diodes tab points are actually connecting same node because of tab is ...
- 27
-1
votes
2
answers
250
views
Understanding Power Diodes and Heatsinks
I am working on reverse engineering and understanding a circuit board from the 1970s. I don't have a schematic diagram from the manufacturer. This board has an unmarked power diode that has a flange ...
- 321
0
votes
3
answers
489
views
How to calculate if flyback diode needs heatsink?
I'm designing a circuit for automotive use, where I control various kinds of inductive loads (motors, solenoids, etc) up to 20A (Máx). In the design i'm looking into using 2 SMD N channel MOSFET in ...
1
vote
1
answer
723
views
DC solenoid overheat protection
I got 40 DC solenoids (12 V, 2 A) and each solenoid may be turned on for max. 5 seconds every couple of minutes or even more. Does this implementation require that an overheat protection should be ...
- 45
1
vote
2
answers
245
views
Two separate heatsinks leads to less volume than one?
I am currently designing a heatsink to handle the heat from a diode and a MOSFET. I can pick either two or one heatsink, and my goal is to minimize the volume of the heatsink.
Intuitively I would ...
- 47
0
votes
1
answer
101
views
how to use TO-254 Power MOSFET and DIODE's full current capacity? [closed]
I want to know how I can utilise full current capacity of a TO-254 power MOSFET or diode while using it on a PCB.
Presently I'm not able to utilise it completely, due to the limitation of the number ...
2
votes
3
answers
1k
views
Heatsinking considerations for Common Cathode Rectifying Diode
I am using this as rectifying diode in full bridge configuration in one of my power supply designs. My questions are regarding heatsinking of the diodes. They are as follows:
Do I need to use ...
- 51
0
votes
4
answers
1k
views
1N5822 schottky diode heatsinking
Is the cathode for schottky diode hotter than the anode, as is common for most diodes, or is it reverse polarity? A schottky is a metal-semiconductor junction, with the metal at the anode. So it ...
- 2,177
0
votes
0
answers
182
views
drilling a heatsink for a hot silicon diode?
I had to adjust a CC/CV charger by 0.5-0.8 volts. The charger is rated at 3.5 Amps 58.8V, and I have some 50-100V diodes rated at 5A ( 6A10 MIC ).
The diode gets to about 100'C which is a bit on the ...
- 949
0
votes
2
answers
861
views
Providing a One-way Heat Sink [closed]
How would one design a component that allows heat to flow freely in one direction only, while preventing heat conductivity in the reverse direction?
I imagine such device might be thought of as a "...
- 169
0
votes
1
answer
811
views
Heatsink for diode and mosfet in 12V 15A LC circuit
I am trying to design simple step down bulk voltage converter:
This circuit will be 'stepping down' 12V to lower voltages depending on needs (driven by 20kHz PWM with variable duty cycles). The load ...
- 167
1
vote
3
answers
1k
views
How to to Use a Nylon Shoulder Washer?
I'm somewhat curious as to how to use a nylon shoulder washer with a bolt. There is an example of this here (https://electronics.stackexchange.com/a/45579/95654), but I can't figure out how it would ...
- 403
2
votes
2
answers
3k
views
Thermal power dissipation for a diode with heatsink
I have a circuit that has a diode that needs to support 3A through it. The supply is at 7.2V and is therefore ~22W.
I have currently selected a schottky diode show here. Key specs are it can ...
- 421
5
votes
2
answers
2k
views
What efficient techniques exist for rectifying high voltage?
I want to rectify 120V (mains North America) at a relatively high amount of current (5 amps), so naturally my first idea is to just find a bridge rectifier. After finding one capable of the current ...
- 1,080