Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Can you give us a few more details on the circuit you are trying to protect? Does it need to dissipate any heat from transformers on transistors or capacitors or any other parts?
Also are there any I/O lines (wires) going in or out of the circuit board. And most importantly, how big is the board?
There are reasonably cheap 'off-the-shelf' type kits you can buy from local electronics shops, but they tend to be low quality type potting compounds. If you are trying to protect this circuit from heat and cold, you may have problems with expansion and shrinkage with potting compound surrounding the board, especially if it is a large board.
Most companies only use potting compounds to protect the circuit from tampering (High secrurity risk circuits) or from the cold, to protect from heat the cooling of the board tends to be done with airflow.
You will also need to be certain the components you are using will be able to cope with the low (& High) temperatures that you want this to operate in.
If you give me some more info on what it is youwant to do eactly, I can point you in a better direction!
my circuit isn't using too much power, and I haven't noticed any heat from the voltage regulator at all on my breadboard. using a 7805 to take 12v from a car battery and dropping it to 5v.
yes on the I/O lines. i am thinking that it might be about 2"x1.5"x1" maybe a little bit bigger. a lid will not be used either, as i will have the i/o lines come right out of the compound. I wan't to protect the circuit visually, and from heat and cold, since it will be mounted under the hood of a car.
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