(07-12-2013, 12:45 PM)Robert Darwent Wrote:(07-12-2013, 11:38 AM)pwdrive Wrote: mains droppers where a section had gone open circuit and then bridged with a replacement dropper section only to find that the original section had remade it's contact
(07-12-2013, 11:28 AM)Refugee Wrote: If the old detector is left in circuit and it fails short circuit it is inconvenient but not fatal. It is a compromise to me
There is no compromise I can see by adding a diode underneath in the first instance. It will either solve the problem or tell you for definite you need to remove the IFT can.
Regards
There is a compromise here.
Glass packaged germanium diodes are sealed in a controlled dry environment and if they "go to air" they may well slowly go short circuit or resistive this may show up as a poor signal and get worse over time so the added diode could end up being a short term solution and will only be a permanent solution for a clean open circuit fault.
