| Attachment | Size |
|---|---|
 Apple-1 Components Temperature | 9.27 KB |
Hi,
I thought it might be of interest to share the components temperature (Celsius) that I measured with a small IR thermometer. I bought this after I burnt my finger testing some 74161 ;-)
Anonymous
User login
Please support the defense of Ukraine.
Direct or via Unclutter App
Active forum topics
Recent content
Navigation
No Ads.
No Trackers.
No Social Media.
All Content Locally Hosted.
Built on Free Software.
We have complied with zero government requests for information.
I dun know, 5300 seems a little hot. ;-) (oh, 5300 uF @38C)
Small caps seem to be generating a lot of heat. And, of course, the 5v regulator
This is where Uncle Bernie's switching power supply mods really help.
My guess is that the heat from LM 323 5V regulator is causing that high temperature. The + side of the 5300 µF is only at 25c and the - side, close to the LM 323, is at 38c. I might try later on to put a heat screen to see the result.
Hi, I once found a photo of the Apple 1 in a Flir thermal camera online – I'm attaching it. Please remember that this isn't my photo, I'm not the author, and I don't own any rights to it. I can't find its source now.
BTW, the best way to reduce the temperature of the LM323K is to use a transformer with a low voltage on the secondary side ~7V to 8V (not more!). In this case, your stabilizer will not get very hot. Some people cook eggs on it and additional use fans - sic.
Regards,
apple1_termo.jpg
It looks like it came from the website "aaplcollection.com"...