Battery life (CF and PCMCIA)

I dont know for a fact if this is the case, but for me it is.

CF - Use less power
PCMCIA - Uses more power

Am I correct or do i lose sense of time when I use CF cards ? LOL

I have to get a SD to CF and then a CF to PCMCIA adaptor for the Sharp 4000 and I was curious with a few things.

A) Does a SD card thru all these adaptors use more power because in the end it is in a PCMCIA slot?

B) Does a SD card thru an adapter in the CF slot use less energy then if it was in the PCMCIA slot ?

Thanks for any clarity here haha :-)

-Walt B

Isnt CF 3.3v and PCMCIA 5v?


Edited by WallyB110 2021-11-10 4:16 PM

Both PCMCIA and CF can run at 3.3 or 5v. In terms of current draw, 'may be', but largely because comparing a modern CF card with a 1990's PC Card flash device is likely to show up its age.

So...



"we can build bunk beds ?" hehe

Sorry im in a funny mood. So im taking it that newer CF cards or SD to CF adaptors draw less power than the PCMCIA standard.

;-)

Thanks

-Walt B

Edited by WallyB110 2021-11-10 5:31 PM

But wait ok this is where i got a brain fart lol

If im using a SD card and i put it into a CF adaptor and that into a PCMCIA adaptor, into my palmtop. Does it drain the battery like a standard PCMCIA memory card ?

-Walt B

https://electronics.stackexchange.com/questions/388238/advice-about-...

says about microSD.

https://en.wikipedia.org/wiki/SD_card
has the Power Consumption section.

"During transfer it may be in the range of 66–330 mW (20–100 mA at a supply voltage of 3.3 V). Specifications from TwinMos Technologies list a maximum of 149 mW (45 mA) during transfer. Toshiba lists 264–330 mW (80–100 mA).[178] Standby current is much lower, less than 0.2 mA for one 2006 microSD card.[179] If there is data transfer for significant periods, battery life may be reduced noticeably; for reference, the capacity of smartphone batteries is typically around 6 Wh (Samsung Galaxy S2: 1650 mAh @ 3.7 V). "

Some info on https://www.dpreview.com/forums/post/6772340
says about Compact Flash cards.

In your case, I think it's only about 66-330mW consumption since you are using an adapter from SD -> CF -> PC Card.
The actual mileage may vary.

Hope it helps you.

-stingraze

Gotcha, ok so a SD card going thru adaptors to PCMCIA uses less battery than a standard PCMCIA memory card.

-Walt B

Was thinking of getting a SD to PCMCIA instead for these other units that only have PCMCIA slot.

Anyone recommend a certain model ?


Edited by WallyB110 2021-11-11 1:20 AM

no, the difference is about the age and quality of the components but standards can use the same voltages. Usually 3.3v.

You could find yourself mixing and matching dozens of adapter cards to find the right combo of them to work on you old handheld.

Lot easier to just buy yourself an USB --> PCMCIA adapter that you could plug into any laptop/desktop. Then all you need is some simple PCMCIA ATA memory card. 64Mb cards are relatively inexpensive and more than large enough for CE devices.

I remember Panasonic's SD to PCMCIA card worked well on my Cassiopeia A-51.
It had Windows CE 1.01 on it. (Japanese version of Windows CE 1.0).

The part number is: BN-SDAAP3