yes youre right, ~1A current going through a resistor would quickly add to a lot of dissipated heat :cryyy: i had a look over the data sheet for the lm78XX series, useful stuff to know so thanks for bringing those to my attention.
i think your second suggestion is the way for me to go being the...
thankyou for the quick response,
i think i understand what you mean about the diode, taking the path of least resistance, it would then return any stray current back to the cathode end of the fan rather than the driver, correct?
The fan is a Sunon (sleeve type?)
i was using the wire just...
I am preparing to build my first labby but was hoping some of the more experienced on this forum could check for any errors or red flags i might have missed :thinking:
attached is the circuit diagram i have constructed, which lead to a few questions, but first i will give a detailed component...
thanks hak ill be sure to make good use of your network :D in such a huge forum it will be invaluable!
luckily for me millirad, we dont get a lot of snakes in my area unless its summer :eek: did a quick image search for papuan taipan and wow thats a beautiful snake!
Thanks for the advice on editing, id been wondering how people did that :)
thanks for the bump and the warm welcome, ill be sure to read all the 'rule' stickies :thanks:
thats great, thankyou stalker ive ordered the parts now for the painful 2-3week wait! yes glasses are also on the way too of course
thankyou for the suggestions Alan hopefully it all goes well :yh:
woops didnt see your reply there sorry! like i said, i wasnt really thinking when i said 5mins. would a 30sec runtime still need a heatsink?
yes DTR is looking like my savior at the moment!
sorry i wasnt really thinking when i said 5minutes, which is actually a fairly long time :crackup: 30seconds should do just fine but i will also position a fan onto it for extra cooling.
i have been looking into a test load from this thread...
thanks for the quick reply! okay i shall stay away from used diodes and those that look like cheap china knockoffs etc ;)
I like the look of DTR's stock and after looking through his threads i think this will be a more suitable diode...
yes lucky for me australia has weird laws that allow importing components but not completed builds. i finished my first build yesterday which was a simple 5mW pointer but now i want to move onto bigger and better stuff!
thankyou for the warm welcome