M
Mike
- Jan 1, 1970
- 0
Hi,
I've got a small PIC project with a 7805 regulator. It was working fine
until I added ICSP (I soldered in the ICSP header and reprogrammed the uC
without checking that it still worked in between :/ ) I have checked all
my new connections and can't see any bridges.
After reprogramming via ICSP the regulator doesn't appear to function
correctly. With input around 8V I get about 3V out, with input around 12V
I get almost 4V out.
Is it possible that the 5V that is fed into the circuit by the programmer
could have damaged the regulator (the regulator was not connected to a
power source at the time)?
The project works ok if I connect 5V from an external source.
Regards,
Michael
I've got a small PIC project with a 7805 regulator. It was working fine
until I added ICSP (I soldered in the ICSP header and reprogrammed the uC
without checking that it still worked in between :/ ) I have checked all
my new connections and can't see any bridges.
After reprogramming via ICSP the regulator doesn't appear to function
correctly. With input around 8V I get about 3V out, with input around 12V
I get almost 4V out.
Is it possible that the 5V that is fed into the circuit by the programmer
could have damaged the regulator (the regulator was not connected to a
power source at the time)?
The project works ok if I connect 5V from an external source.
Regards,
Michael