Problems with 12F675

[fratello]

The regulator is ST78L05, with 1x0.1 uF decoupling on output (SMD,on the back side) ; the diodes for relays are 1N4007 (on the back side). Thanks for patience !

[Archangel]

Hi Fratello,
I think what Darrel is saying is the 3ma you are measuring is going out through the regulator as HEAT, and your circuit is working as expected.
Question, if this is a power window switch, do you shut off it's power with the ignition ? You lose more than 3ma because the top of the battery is not clean, and you cannot clean it well enough to not lose it.

[fratello]

I put one capacitor of 1uF to output of 78L05 and I replace the two diodes from relays with 1N4148, and ...YES !!!!!! Now the consumption is 2.5 mA and BOTH buttons work VERRY WELL !!!!! What a simple solution !!!! I can't explain why now work, but I'm HAPPY ! THANK YOU ALL SO MUCH !
...now I have in mind another thing : at the first start of this module, reading the current of overrload and memorized him in eeprom, for using as reference for further decoupling of relays. I read about this first 'calibration' in "12F675 Voltage monitor" by Frank Miller. Now I don't know how reading the highest level of voltage assuming the variation of tension is something like this ...
PS : Hope not making mistake if I bring here this new subject...
PS2 : A new observation : It's enough to put 1 uF capacitor; don't need to replace the two diodes on relays ! I try this on the other module.

[Acetronics2]

Hi, Fratello

you should try the ICL 7663 as a regulator, instead of the 78L05 ...

quiescent current is ... rather interesting !!!

Alain

[Darrel Taylor]

That 10µA or less quiescent looks really nice.

Is there something like that in a fixed voltage TO-92, so fratello can just stick one in his PC board?
<br>

[Acetronics2]

That 10µA or less quiescent looks really nice.

Is there something like that in a fixed voltage TO-92, so fratello can just stick one in his PC board?
<br>

Hi, Darrel

LP 2950 ACZ 5.0 from National, i.e.???

regards

Alain

[fratello]

I try to put another 'tips' in the code of this button.
At start ( plus by auto's contact) the PIC read from eeprom the value of overrload (variable "calibra"). If this is zero or less than minimum value (setting by me at 270 mV) start subroutine "calibration:". The value of maximum tension reading here are memorized as new value for "calibra".
One new start : the value of calibra is NOT zero or less than minimum value, so the module works as usual.
It's correct the code ? I think it's something wrong with reading/writing "calibra" from eeprom ?!? How write correct value of "calibra" in eeprom ?