Ahhh, well I thought I read somewhere it was very short, milliseconds maybe. I know I've heard it on shut down, I will listen on start up. I don't hear the transformer make any noises, but it is a nice big honker.
I had read a thing or two about them getting stuck open after heavy use/abuse, and seeing full mains voltage directly after it made me wonder.
I will investigate the build thread, as well as a few places in this thread where components are altered to lengthen the time....although, if it works...
Russellc
I had read a thing or two about them getting stuck open after heavy use/abuse, and seeing full mains voltage directly after it made me wonder.
I will investigate the build thread, as well as a few places in this thread where components are altered to lengthen the time....although, if it works...
Russellc
you mean eternal to the case? for safety reason i think not.....these board is small enough to fit inside the case where it will pose no safety issues once installed properly...
Maybe Oltos means "in a small metal box next to the chassis" That would be OK, right?
The F-4's are usually built with varistors in the PSU. They do the same job as the Soft Startup thing.
In class A amps, where the current draw from the mains doesn't vary much while playing music, this works quite well.. I have 4 ch of F-4 and haven't have any problems w/o a soft start board.
The F-4's are usually built with varistors in the PSU. They do the same job as the Soft Startup thing.
In class A amps, where the current draw from the mains doesn't vary much while playing music, this works quite well.. I have 4 ch of F-4 and haven't have any problems w/o a soft start board.
yes, wot an idiot!!
Guys, another option for the obsolete Omron relay is this one from Panasonic. It's almost identical.
Mouser: 769-JS1-24V-F
JS1-24V-F Panasonic Industrial Devices | Mouser
Mouser: 769-JS1-24V-F
JS1-24V-F Panasonic Industrial Devices | Mouser
I tried to compile some of the info in this thread into the wiki, for more of a one-stop shop that other users can update without forcing folks like poor Jojo to edit his first post for years on end... Unfortunately I can't figure out how to edit the main wiki page to point to the new article (it appears to be main page appears to be protected).
I plagiarized plenty, with little credit given, but don't want any myself either, so feel free to edit and take credit for your own work where applicable, add detail, etc.
Here's the wiki though:
Power Supply Soft Start (V3) - diyAudio
I plagiarized plenty, with little credit given, but don't want any myself either, so feel free to edit and take credit for your own work where applicable, add detail, etc.
Here's the wiki though:
Power Supply Soft Start (V3) - diyAudio
good on you sir....Can anyone confirm a working replacement relay? The 653-G5LE-14-DC24 suggested earlier is a 4-pin relay, not a 5-pin. It looks like the closest replacement so far is the Panasonic JS1-B-24V-F but I haven't tried it.
See my post, #168, it's the one I used.
http://www.mouser.com/Search/ProductDetail.aspx?R=JS1-24V-Fvirtualkey66710000virtualkey769-JS1-24V-F
Longer delay
Hello, I'm a newbie so bare with me. I have a 550va 36-0-36vac EI transformer. I use 115vac at the outlet. I have the diyAudio PSU with 120,005 uf capacitance. After the relay on the soft start switches, the 15 amp home circuit breaker switches. The lights on the PSU are on and the 10am fuse at the power button is still intact. I'm scratching my head trying to figure out if I need to recalculate the resistors on the soft start, whether I need the delay to be longer, or if I have a shorting problem somewhere? Any help would be appreciated.
Hello, I'm a newbie so bare with me. I have a 550va 36-0-36vac EI transformer. I use 115vac at the outlet. I have the diyAudio PSU with 120,005 uf capacitance. After the relay on the soft start switches, the 15 amp home circuit breaker switches. The lights on the PSU are on and the 10am fuse at the power button is still intact. I'm scratching my head trying to figure out if I need to recalculate the resistors on the soft start, whether I need the delay to be longer, or if I have a shorting problem somewhere? Any help would be appreciated.
I will definitely use a bulb tester next. I was using a variac with a 3 amp fuse and every time I turned the voltage up, the fuse would blow but no smoke or weird smells. As a result, I thought the current exceeded the 3 amp fuse.
Scheme as is
Yes, it is a dual mono but other than the IEC inlet, it has separate fuses and soft starts. The four bridge rectifiersx are underneath the PSUs. The PSUs are on 2 inch standoffs.
Yes, it is a dual mono but other than the IEC inlet, it has separate fuses and soft starts. The four bridge rectifiersx are underneath the PSUs. The PSUs are on 2 inch standoffs.
