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+--- Thread: Replacement Regulators (/thread-562.html)
Replacement Regulators - CheshireNoir - 16-09-2022
Hey Folks,
In an effort to keep the temps down on my 'bees, I was thinking of replacing the 7805 regulators with modern Traco replacements.
Does anyone know how many amps the various 7805s are likely to draw? There's obviously a difference in price between a 0.5A Traco and a 1.5A Traco :-D
Mostly the ones under the keyboards concern me. I can just upsize to 1.5A if there are any worries.
Cheers!
John
RE: Replacement Regulators - ChickenMan - 16-09-2022
Other than the ones supplied with the Keyboard Replacement kits (no idea of their rating), I've only replaced the 2 voltage regulators on the core boards with 0.7W ones, like these https://www.ebay.com.au/itm/134191370167
RE: Replacement Regulators - CheshireNoir - 18-09-2022
Cheers Chickenman!
I might just get the 1.5A ones to go under the keyboard for now. I figure they're so hard to get to, I may as well replace them while I'm under here.
John
RE: Replacement Regulators - Ernest - 18-09-2022
Hi John,
Its only the surge that they need to handle. The combined power draw for all three regulators in the Microbee is less than 1.5 A total, so individual rating of 1.5 A should be ample. I have used 3A ones in several systems, but only because I had a hand full on hand at the time.
Earnest