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Sir Clambake. . . . . . .
" By the way -turns out the relay is oriented horizontally. "A1" and "A2" marked on the photo on page 3 are actually the coil pins. "C1" and "C2" are a small cap. "
Go ye now and VEWY-VEWY-VEWY carefully inspect that relay again,. both referencing to the PCB and the actual engineering drawings and photos of the
most honnable Song Le unit, that is being used in your unit.
By the terminal layout of 6 contacts , some can be clipped to have the three connections of a SPDT relay available on EITHER side of the case, as an option.
In your case, they chose to use the terminals that I have circled in PINK. and not be using the YELLOW X marked terminals.
Also in referencing to the GREEN squares, they bring up AND USE ROUND wires for the two coil connections, whereas the active relay contacts are mini rectangular terminals.
Song Le relay:
As was mentioned earlier:
There is a fixed foil path from the C1 coil land up to the A1 (normally closed) relay contact foils land.
Also, there is zig zag fixed foil path from the C2 coil up to the A2 (normally open) relay contacts foil land .
Assuredly those paths are making you think differently as to the actual coil connections .
Soooooooo . . . if you can confirm that C1 is being negative polarity while C2 is being the + 24 polariy, it just looks that the common AC contact is just getting a ground, when normally inactivated,
While it receives a +24 when the relay coil is activated.
Can you identify my nearby mystery FUCHSIA ? part yet ?
Look at the blue relay case and I have YELLOW highlighted the "TV-5" and that is what I usually call this relay . . .it has s been EXTENSIVELY used . . . . . for at least 30+ years
Post #57 Photo Referencing:
" the coil pins. "C1" and "C2" are a small cap. "
Look at the YELLOW line that I used to connect the relay photo to its YELLOW rectangular case profile on the PCB, now just above that interconnecting line there is a 100 ohm SM resistor, and that
electrolytic cap at the SIDE OF THE RELAY, looks to be connecting across it at that point.
73's de Edd
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