pole impulse pro

[Orbit]

LM7812 = 12v !

[kt315]

LM7812 = 12v !

this is only option. the stab IS ABSENT at pcb, so not needed. look his pics.

[AK48]

dear Orbit , i always no that 7812 means 12 volts , what i wanna know , is this 7812 the right components for this board because the batt is 12 volts and to work , the 7812 must have at the " in " pin " more than 12 volts datsheet said input voltage from 14 to 35 volts but the batt is only 12 volts ???
Linear regulators like the LM7812 have a minimum "dropout voltage" or "headroom"- for the LM78xx family, this is about 2 volts. This means that the minimum input voltage required for the regulator to work is about 2 volts above the output voltage, so you'll need at least 14 volts into the LM7812 to get 12 volts out.
unless the diagram includes a laplace type voltage doubler which would give a suitable voltage to operate the 7812 ??? that's for this reason i need this shematic
see pic before i desold it

[kt315]

7812 is mistake. my mod was with 7909 or 7910. i put it instead diodes in negative rail.
yes, minimal dropout is 2 V, also as with two diodes.

[AK48]

thank you

[kt315]

also, pin placement of 79xx is different than 78xx. you must remember this.

[AK48]

yes i know for 7912 pinout is : 1=ground 2=input and 3=output and for the 7812 pinout is : 1=input 2=ground and 3=output that's why i'm gonna verify tomorrow if the ground is in the middle or not it(s too late , thanks and goodnight