Maker Pro
Maker Pro

Intercom PSU fix/ replace?

enyaw84

Oct 11, 2022
1
Joined
Oct 11, 2022
Messages
1
Good day all :)

Long time reader, first time poster.
I have a very basic intercom system with a release lock to a small wooden pedestrian gate, similar to the attached #1.
The Power supply was recently destroyed (don't ask) and my limited knowledge on transformers has me stumped.
The wire inside has come off and I wouldn't know where to place it to meet the original (and correct) coil. I have attached pictures of it here, #2a & #2b.

We have 230v wall power in my country, so that is the input (three pins into the wall) and then I can tell it's either 12 or 16v output (not sure) to the intercom phone. Over time, it's been completely stripped of any markings so there I can't tell voltage and amps. Any ideas/ advice? I have taken it to multiple electronics stores and for some reason people dont have anything like it..


Is it an easy solder fix? If I was to order one online, what specs should I get?
Or can I simply wire up regular 12v plug that one would use with a wifi router? (image #3)

Thank you in advance for any advice :)
 

Attachments

  • 1.jpg
    1.jpg
    10.6 KB · Views: 5
  • 2a.jpg
    2a.jpg
    174.9 KB · Views: 6
  • 2b.jpg
    2b.jpg
    185.9 KB · Views: 7
  • 3.jpg
    3.jpg
    25.2 KB · Views: 7

Bluejets

Oct 5, 2014
5,989
Joined
Oct 5, 2014
Messages
5,989
Cannot see the full photo in 2b but it appears to be straight off the transformer secondary making it AC.
Wire pulled out would be the primary so it would have connected to a rather fine wire ...appears to be no cable strain relief which is probably why it broke off when someone decided to fiddle.
The one in 2a is zero help........ as is 1 without any model etc. .......3 is DC supply which may or may not work but not enough info at present to say.
Does the gate unit have any details on it.?
 

73's de Edd

Aug 21, 2015
3,432
Joined
Aug 21, 2015
Messages
3,432
The third pic seems to have all 4 slots with their dedicated connections .
By the shorter blue . . .unconnected . . . wire length , one would suspect its original connection being into the other side of the transformers slots.
Will a lifting up of the white tape on that side, reveal the fine wire that is going to be going down to the very innermost winding start of that primary winding ?.
 
Top