roughshawd
- Jul 13, 2020
- 325
- Joined
- Jul 13, 2020
- Messages
- 325
I have an old psu from some thing that was put in the operating pile in 2007. It has a two button, momentary interupt (gel button) board that plugs into it which has some kind of action that it is supposed to perform when the device is turned on with a second, push to activate - positive on positive off - start button. I am fairly sure the PSU will work, when I get the resistors put back on the board and figure out what the buttons do...!!! Anyway one of the secondary wires was corroded at the pin and I soldered an extension on to it so that it would reach the pin. It was at the start of the winding, buried under the coil, so I couldn't just remove a couple wraps. The primary on the transformer is 110v and the secondary is 10v according to a neat little sticker tape that was on it when I pulled it. . Nice little transformer! The board is fused and has a buzzer on it... worth saving!
My question is kind of moot as usual... far be it from me to tell a professional how to build their PSU...
Personally I would never build a 220v board with 110v parts... that seems a bit too inexpensive...
But transformers are not inexpensive at all. so why put a 110v transformer in a 220v system?
These asian boards were mass produced and probably have no records of their manufacturer or schematics that are available to us U.S. junk dealers. This board has a T15/250A AC fuse on it and all the relays are 250v 10a. Does this mean that the board was probably designed to be used in Europe or Asia, and maybe someone used a 110v transformer instead of a 220v transformer on it
???
My question is kind of moot as usual... far be it from me to tell a professional how to build their PSU...
Personally I would never build a 220v board with 110v parts... that seems a bit too inexpensive...
But transformers are not inexpensive at all. so why put a 110v transformer in a 220v system?
These asian boards were mass produced and probably have no records of their manufacturer or schematics that are available to us U.S. junk dealers. This board has a T15/250A AC fuse on it and all the relays are 250v 10a. Does this mean that the board was probably designed to be used in Europe or Asia, and maybe someone used a 110v transformer instead of a 220v transformer on it
???