Kazracage In this Teardown Tuesday, we are going to take a look at the inner workings of a radar gun! Datahseet could be that the soft start circuit is not ok. Once I disconnect them the power supply comes to life. Not obviously bad, but certainly not good. I figured this datahseet what blew the power supply.
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Malagis The other parts that get stressed are the snubber R-C components, hard to pick out without a schematic. Dec 4, Electrolytic caps are BY FAR the 1 component failure in cheap switcher power supplies because they have high peak currents rushing in and out at high frequency.
Your name or email address: As soon as the peltiers are disconnected the voltage jumps to 12V and the rest of the unit powers up fans, LCD, etc Not obviously bad, but certainly not good. Usually with this type of psu, there will be a delay to get the 12v up working, then it will power the peltiers, there must be a slave smpu on the board to give the ic its 12v. I figured this is what blew the power supply. It shows about 1. Dec 26, 7 0. The TL usally has a slave start up oscillator oscthat 2s its voltage, then the the ic takes over and feeds the start up osc with sync pulses to dqtasheet the desired regulated voltage,so your circuit will be similar to this design ,without the op amp chip.
I do have a low budget scope, so I checked out pin 4. Oct 18, No, create an account now. BTW, does the uF still gets hot, when everything is ok when you connect dagasheet peltier loads after sometime? Ok, sorry it took me a few days to get this check done. Could this be causing the problem? Do you already have an account?
Anything else I should look at? I disconnected the peltier coolers and everything comes to life. Quote of the day. Oct 18, 9. I keep seeing alot if info regarding ripple current, but not ESR. Oct 18, 5.
In this Teardown Tuesday, we are going to take a look at the inner workings of a radar gun! I replaced the fan and reassembled the unit to see if it would power back up. Once I disconnect them the power supply comes to life. TOP 10 Related.
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