Re: [Usbpicprog-technical] new PCB and current software status

[Ravi <chi...@vs...>]

Hi Frans

> I have already changed the circuitry of the voltage pump, but I am 
> afraid that a voltage divider would unnecessarily take current from the 
> voltage pump. By the way, I have not released the 0.3 yet, because it 
> needs some additional changes in the values of some resistors and some 
> last checkups.

If we have a 1 mA bleeder current, then 12K and 1.5K will provide 1.5V 
to the ADC.

VCC	13.5
R1	12
R2	1.5
V1	(VCC*R2)/(R1+R2) = 1.5V

If we have a 0.1 mA bleeder current, then 120K and 15K will provide 1.5V 
to the ADC.

VCC	13.5
R1	120
R2	15
V1	(VCC*R2)/(R1+R2) = 1.5V

Cheers

Ravi