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TI59 -Powering with a regulated 5vdc - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: Not HP Calculators (/forum-7.html) +--- Forum: Not remotely HP Calculators (/forum-9.html) +--- Thread: TI59 -Powering with a regulated 5vdc (/thread-12506.html) |
TI59 -Powering with a regulated 5vdc - Jlouis - 02-26-2019 12:38 AM I read in this site here that we can power a TI-59 with a regulated 5VDC, without the battery pack. As I have this regulated source, I tested in mine 59 and it worked, but sometimes it became intermittently erratic. I know the calculator have a regulator circuit to charge the battery and adapt to a certain voltage and this led me to question if this already regulated and rectified voltage can damage anyway the calculator circuit. Edit: my regulated power source is up to 5A. I thank you in advance for whatever enlightenment in this subject. Cheers JL RE: TI59 -Powering with a regulated 5vdc - budmur - 03-01-2019 01:32 AM Even though the supply is regulated, you may be getting some ripple in the output. You can try putting a bypass capacitor across the output. Something in the 10s of microfarads should work fine. RE: TI59 -Powering with a regulated 5vdc - Jlouis - 03-01-2019 11:59 PM (03-01-2019 01:32 AM)budmur Wrote: Even though the supply is regulated, you may be getting some ripple in the output. You can try putting a bypass capacitor across the output. Something in the 10s of microfarads should work fine. That's a good idea! Thanks JL RE: TI59 -Powering with a regulated 5vdc - Jlouis - 03-02-2019 08:47 PM (03-01-2019 01:32 AM)budmur Wrote: Even though the supply is regulated, you may be getting some ripple in the output. You can try putting a bypass capacitor across the output. Something in the 10s of microfarads should work fine. It worked! Really thanks! Best Regards JL |