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+--- 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