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Could you please give me one or two part numbers of power MOSFETs. Also explain me how the connections differ from BD681?
Added after 7 minutes:
Actually, I had developed a working prototype with ULN2003A and relay. The reason i switched to transistor instead of ULN is that the ULN2003A...
I have connected the light as shown in the schematic, is this correct? The light has a knob which if I increase to max, it draws 1.5A-1.7A of current and it increases the intensity of light.
The BD168 becomes very hot, it cannot be touched. My bread board got melted!
If I mount this on the...
Hi Brian.
I have used BD681 and connected lights, the logic is correct and the circuit works. But the problem is that each of the transistors dissipate approx 38Watts of power (as heat) which is too much.
Please suggest how I can deal with this issue?
Thanks Brian for the detailed reply. It helped me alot in make some savings by redesigning my circuit.
Also thanks for not letting my thread hijacked! :D
Thanks "pranam77" and "betwixt" for the reply. It works for me, but i would like to know whether this type of setup is safe or not i.e, will it fry my PIC because of high current requirement of the load?
BTW I need to drive 3 such lights so I am using ULN instead of transistors.
Also, do I...
Hi,
I have a PIC micro which i want to connect to a 24v 1A DC light (bunch of LEDs packed into one big light), I know i can use a relay and ULN2003a and 24v supply to do the things, but I am not understanding how to connect them together. Please help me with the connections. A schematic...
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