29-03-2017, 02:56 PM
OK - first thing to say is that heat sink will be far too small for continuous use. It should allow the unit to run for a few 10s of seconds before overheating - perhaps a bit more - but as it is, it'll need a major upgrade. Once the lid is on that (lovely!) wooden box, the lack of airflow will be a problem for any heat sink. Really, one entire surface of that box should be a finned heat sink. Or, use an aluminium box.
And, the rectifier will need to be mounted on the heat sink.
I can't see enough detail in those pictures, so can't be sure about the wiring. Does the +ve from the rectifier go via that black wire?
Check for a faulty bridge, or for dry joints that pass enough to power the thing with no load, but not the full 1A.
No need to dismantle whole thing at this stage - finding where the problem is will be useful experience.
And, the rectifier will need to be mounted on the heat sink.
I can't see enough detail in those pictures, so can't be sure about the wiring. Does the +ve from the rectifier go via that black wire?
Check for a faulty bridge, or for dry joints that pass enough to power the thing with no load, but not the full 1A.
No need to dismantle whole thing at this stage - finding where the problem is will be useful experience.
