Mosaic
Well-Known Member
Hi All:
I have a project running a capacitive discharge off a 36V supply. The 36V is also regulated via an LM317 to 12V and then via another to 5.12V.
The discharges are causing some 500Hz sub 150mV ac spikes (5uSec kickback) on the 5.12 Vreg line meant to feed a 16F886 and 16x2LCD.
Now the 16F886 knows when the pulses take place so it can avoid using the adc when the transient is happening as the Vref = 5.12 Vcc.
What I am wondering is if the PIC is tolerant (no resets) of 0.15V spikes on its Vcc?
Or do I need to make an independent supply for it?
I have a project running a capacitive discharge off a 36V supply. The 36V is also regulated via an LM317 to 12V and then via another to 5.12V.
The discharges are causing some 500Hz sub 150mV ac spikes (5uSec kickback) on the 5.12 Vreg line meant to feed a 16F886 and 16x2LCD.
Now the 16F886 knows when the pulses take place so it can avoid using the adc when the transient is happening as the Vref = 5.12 Vcc.
What I am wondering is if the PIC is tolerant (no resets) of 0.15V spikes on its Vcc?
Or do I need to make an independent supply for it?