From Kenny Balys Sent Sat, Mar 16th 2019, 01:40
1 set of 1N4002's, they were in a circuit with +/1 15 V rails. Another 2 sets of 1N4004's in a circuit with a single +35V I checked my mains and they are not at 220V, more like 232V and it seems to vary a little bit. So I guess things are going to be running a little hotter. Why are mains voltages increasing? is there a good reason for this? In every case, I replaced the diodes with 1N4001's (which are good to 50V of course). The master decoupling caps were also changed. Sadly, I cannot seem to find brand new axial electrolytic capacitors so I have to put in radials. Visually its not as nice but then what matters most is that the gear works. On 16.03.19 01:09 , Mike Beauchamp wrote: > > > On 3/15/19 8:15 AM, Kenny Balys wrote: >> >> >> In the past month I have had 3 pieces of equipment with bad >> 1N400x diodes functioning as rectifiers in a power supply. >> > > Which 1N400x Kenny? They go from 50V to 1000V... curious to see what part was > used, and what voltage it was operating at. > > As you probably know, home mains voltage has been steadily increasing. Just > wondering if the manufacturers specced a part that was only within 20% of it's > operating limits and is now operating beyond that. > > Mike > >