Archived posting to the Leica Users Group, 2003/02/19
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Frank I'm sure that when the time comes that there are no more stuffed PCBs, some enterprising hobbyist will duplicate all those diodes, transistors and integrated circuits with vacuum tube circuits! Of course it would require a whole ROOM full of conventional and vacuum tube circuitry to duplicate the functions of a M7. Jerry Frank Filippone wrote: > Austin... Must agree with you on the motor/E-M parts....the display in > terms of the M family is a simple set of LED's... I do not worry abnout them > too much... the LCD panel on the R8/9 would be a problem. > > The issue over the PCB is to get the board already stuffed... as the > individual parts ( IC's ) may not be purchaseable from Leica as a > component.. it may be a board level purchase only...... Yes, replacement > PCB could be made.... using the then current technology... but I have never > seen this done for consumer electronics.... > > I don;lt know the circuitry in the M6 or M7... I have had inside information > on the CL camera... The IC was only an analog comparator(s). That would be > pretty easy to copy. I suspect the M6 has a simple uP to do the entire job, > and the M7 probably has the big brother with associated analog drivers, etc > for the shutter solenoids ( or whatever you call the thingie that release > the mechanical shutter parts)....and a crystal oscillator... and then the > meter AE program. > > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html