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Solar Powered Security Light In this teardown, we will look at the internals of a 2sf3306 light which contains its own solar charging system. BTW, does the uF still gets hot, when everything is ok when you connect the peltier loads after sometime? Oct 18, 8. I keep seeing alot if info regarding ripple current, but not ESR.

Dec 4, Ok, sorry it took me a few days to get this check done. In this Teardown Tuesday, we are going to take a look at the inner workings of a radar gun! You can force the ic to kick up by connecting pin 4 to pin 2sx3306 ground but as your not getting the 12 supply to start withi would say there is an heavy load pulling the slave osc down.


Once I disconnect them the power supply comes to life.

C Datasheet PDF ( Pinout ) – 2SC

Oct 18, 9. Not obviously bad, but certainly not good. Anything else I should look at? Dodgydave – Yes, it is a 12V output supply. AS to the cooking switch transistor: Jun 22, 7, 1, As soon as I get the lager caps in I’ll change them all just in case.

It’s also where manufacturers pinch pennies and buy cheap. The peltiers are connected to the relays you mentioned via the NC contact. Could this be causing the problem?

Oct 18, 5.

2SC3306 Datasheet, Equivalent, Cross Reference Search

My ESR meter operates at kHz, if I find a cap with a published ESR for that freq on the datasheet is that a switchmode cap or is there another key attribute I’m looking for?

I just can’t get the power supply to fully power up without manually disconnecting the peltiers then plugging them back in. The fans are wired to run all the time. Do you already have an account? Oct 18, Also, I can’t seem to find the datasheet for these caps anymore. I checked both input capacitors ESR and found them to be at the datasheet max limit. Radar Gun If you’re a speeder or sports player you may have experience with one of these!


The ESR of the big caps is climbing with every troubleshooting attempt. As soon as the peltiers are disconnected the voltage jumps to 12V and the rest of the unit powers up fans, LCD, etc Oct 18, 6.

It seems to be getting worse. Switch Mode Power Supply Posted by zulkifli in forum: After that I can plug the peltiers in and the unit continues to run fine and cools quite well.

Yes, my password is: Once the power supply is up and running, I can plug the coolers back in and 2sc306 unit cools perfectly. Oct 18, 7. Oct 21,