Finished building a SSMH hpa and just ordered a case. The heatsinks for the mosfets have just two friction fit pins on the bottom for soldering to a board I assume. These will be mounted on the outside of the aluminum case, vertically.
How do most people mount them? Do I need to remove pins, then tap threads into the channels and use screws? Something obvious im missing? I'm completely new to this and built without any detailed instructions other than a pcb, BOM and schematic. Trying to learn this simple stuff as I go.
These are the heatsinks I have.
How do most people mount them? Do I need to remove pins, then tap threads into the channels and use screws? Something obvious im missing? I'm completely new to this and built without any detailed instructions other than a pcb, BOM and schematic. Trying to learn this simple stuff as I go.
These are the heatsinks I have.
What MOSFETs do you have?
It is easy to mount.
You need however some insulators and screws also insulated.
It is easy to mount.
You need however some insulators and screws also insulated.
Your heatsinks are designed for soldering to a PCB. Start with Step 11 of the Whammy Build "Installing Regulators" for some examples.
https://guides.diyaudio.com/Guide/WHAMMY+headphone+amplifier/3?lang=en
https://guides.diyaudio.com/Guide/WHAMMY+headphone+amplifier/3?lang=en
Use an appropriate heatsink designed for the task instead of putzing around with the wrong parts.
As already mentioned: Those heat sinks are designed for the two support pins to be soldered to the board. They're not intended for a friction fit. I find a 1/4" wide chisel tip helpful for soldering the pins. If you can't solder them in you could try epoxy. But if the board isn't designed to use these heat sinks in the first place, I'd get the correct heat sink for your application.
Tom
Tom
Ok, the board doesn't support these, I just ordered from someone's project list BOM on mouser. I have my mosfets on hookup wires to mount outside the case. I'll look for more appropriate ones.
Well, not knowing what I dont know, I'm not finding much for a similar style heatsink that can be mounted externally on an aluminum case. Anyone have any search terms I might try or potentially a link?
Maybe ask the designer...
Otherwise, for external heat sinks:
www.heatsinkusa.com
www.heatsinkonline.com
Tom
Otherwise, for external heat sinks:
www.heatsinkusa.com
www.heatsinkonline.com
Tom
That kind of heatsink used to be made with extrusions for self-tapping screws. Now only the solder pin version is made.
Ed
Ed
Still not having much luck. Drilling and tapping for screws isn't difficult for me, so I guess thats what I'll do.
I'm guessing that there are many variants of these amps (Pete Millett starving student), and since you haven't posted pics of the one you are building, kind of hard to guess what you are working with.
Here is one variant on Instructables using a guitar pedal aluminum enclosure and mounting a heatsink on top:
https://www.instructables.com/Headphone-Hybrid-Tube-Amp-SSMH/
Here is one variant on Instructables using a guitar pedal aluminum enclosure and mounting a heatsink on top:
https://www.instructables.com/Headphone-Hybrid-Tube-Amp-SSMH/