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Or something else I do a lot is only test one or two phases at a time by playing with the source code – this way you are reducing the amount datashet things you are trying out for the first time and all at once. I can’t see any reason the output lines on the PIC should die unless something is cross connected. If so, you are going to be disappointed with the torque from your controller. The plan right now is to make a few changes to my setup in it’s current configuration – irffl4310 it is running at the momentand once I’ve got my parts chosen and firmware firmed up, I’m going to re-layout the entire board, with more emphasis on the grounding scheme.
After that, I plug in the MOSFET board, and apply 36V rifl4310 it – but it isn’t plugged into the bike just yet, and it at this point, it seems that everything is still fine.
The idea was to get it running adequately – to allow me to lay a PCB out confidently, knowing the breadboard works – and take care of the grounding issues at the PCB stage. The only other thing is the datasheet shows a capacitor across Vcc to Com, but that shouldn’t be blowing the PIC lines. Any feedback would be appreciated! The one that I’m designing is based directly on one by Microchip http: Eatasheet, I plug in the IR, as shown in the schematic, and again it behaves as you’d expect.
Fishing spinners in a river or stream for trout and steelhead is not a subtle fishing technique that requires a strike indicator.
FL Datasheet catalog
Everything works as expected in that when I’ve got my hall sensors plugged into the PIC microcontroller, the right control lines toggle at the output pins of the chip. We own Spinner Fishing for Steelhead, Salmon, and Trout PDF The title is a bit deceiving, however, as the book focuses mainly on steelhead with comparatively less information pertaining to trout and salmon. In this layout, I was more concerned with reducing loop area inductance than I was with the ground loop associated with the drop across the ground plane.
The only difference being that I’ve modified the driver stage to use the IR Mosfet drivers. Thanks again for your help. Last edited by wrobinson on Aug 09 2: I’m thinking about adding in some diodes in between the PIC outputs and the IRs to block any reverse current. Make sure the bootstrap diodes aren’t blown.
Datasheeets & Application Notes
They are on my board, I just left them off the schematic for now, it’s a work in progress Do I have darasheet right part? But in the meantime, I’ll be finishing up the design then the layout. Your point is well taken, and I think the ground loop is likely what’s causing me so much grief.
I am in fact using the IRF Bwhich is good to A derating notwithstandingper the datasheet, and comes in your usual TO package.
Fishing spinners slow in river current causes the blade to pulse and throb sending an irresistible vibration to trout, steelhead and salmon. Thanks again for the feedback, and hopefully as this project matures, you’ll continue to chime in along the way! Shortly I’ll be posting details on the forum for anyone who might be interested to follow along. If the current is somehow flowing back into the PIC that way, that should block it.
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I can’t see why anything should happen if all the FETs are inactive when you plug the motor in and stay that way as they should. I’d still like to know what it flowing back into the controller though if in fact something is. Prime Time Steelhead; Lake St. To monitor the phases, I just use a bank of LEDs – which works just fine, and actually is more informative for what I’m doing that a dual channel scope.
OK, to take a step back and answer the questions from earlier Spinner fishing for steelhead salmon and trout pdf And if anyone has any other ideas as to what was going on, please chime in! Up to that point, I had just been going with hand drawn schematics, and when posting the question, I wanted to have something a little nicer to refer to.
We were having a yardsale last summer, and with 2 little kids in toe, and no big projects on the horizon, I decided to let go of my 20 MHz scope, and start looking out for a nicer one – digital storage type deal, Mhz or so.
(PDF) IRFL4310 Datasheet download
Double check your layout. Anyway, thanks again for the replies, any other ideas would be a real help. You do not have the required permissions to view the files attached to this post. I’d have expected the IRs to act as a buffer, but alas that doesn’t seem to be the case At the time, the board was half the length of this board the MOSFETs were basically back to back with a slab of aluminum to pull the heat away sandwiched between themand I went with a star point because it was easy to run the driver line to the return line because everything was so close.
Regarding the star grounding on the low side of the MOSFET board, my original double sided PCB design did actually use a star configuration for the returns on the gate drivers. All books are in clear copy here, and all files are secure so don’t worry about it.
Generally there are three types of rods used today graphite, fiberglass, and bamboo rodsIf searched for a book Spinner Fishing for Steelhead, Salmon, and Trout by Jed Davis in pdf format, then you have come on to the correct website. Help me debug my controller design Get all your technical information about electric bikes here. Spinner fishing steelhead salmon trends: As well it killed 2 outputs lines on the PIC.
But I wonder if it’s flowing some other way I should have mentioned No problem – I’m an engineer, and if the design isn’t verified, then by definition it is defective. Has anyone encountered anything like this before, or anyone have any insight as to what might be going on. I’m sure you know the drill. Please click button to get spinner fishing for trout book now.