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2019年7月23日 · I can recover in a couple of ways: Run the network troubleshooter which resets the adapter and thereby brings back the network. Manually disconnect (by temporarily selecting a different connection) and reconnect. Those steps both kept the WiFi connection up for several hours to a day or so.
2013年12月18日 · Hi Folks Not written by me ( I wish it was) but a really thorough and comprehensive guide about all SMPS stuff. It includes safety precautions, tips, tricks and everything needed to both understand and repair SMPS.. I stumbled across this site and I think it is the most time I have ever spent...
2011年7月27日 · In an SMPS, you need to know the current at which the ferrite saturates and once you know this, with your Vout and Vin you can work out the duty cycle, hence how much power you can put into the primary, hence how much power you can get out of the
2013年2月27日 · Hi, I have a UC3842 IC which is working good when powered from a wall adapter (18V) it generates pulses at the output pin n everything looks fine frequency is 100KHz but when i power it directly from AC220 via 18(V) Zener and 100K resistor divider voltage drops. i checked...
2011年8月29日 · Aug 26, 2011. #1. DVD player SMPS..HELP!! hi.. My dvd player's powersupply is SMPS and it is fried last week while i was watching a movie so i opened the player and tested the entire circuits and found that SMPS's tiny transformer is fried. I cant find that transformer in any shop at my area, the dvd control circuit needs a 12v+,-12v,GND,+5.
2012年12月25日 · 34063 SMPS IC. The 34063 IC does all the clever stuff, mainly it regulates voltage at 1.25v on VFB pin5. Because of the 6k8:2k2 voltage divider on the output, this gives very close to 5v, I actually saw about 5.01v-4.99v Vout in testing, very nice. Max current limit
2003年11月21日 · New Member. Nov 21, 2003. #1. Hello! Im looking for the schematics of a switchmode powersupply marked SMPS PAL/SECAM V3 A 20203470 It's from an old VCR (Telefunken M9425) ANY help appriciated!! /Markus (the email I use is di00mlm@ing.umu.se) Status. Not open for further replies.
2018年12月20日 · Hello everyone, I have a question about LTspice for power electronics. how can I plot a parameter along the full simulation time, but it is averaged for each switching period? That is to say, Can I see this averaged value changes along the time? I know the .meas command can integrate between the...
2016年3月12日 · Hi My first post here, hello all. I have a burnt out resistor on the mains input to a small low power switch mode supply which powers the microprocessor board on a dehumidifier. The resistor it totally burnt out, open circuit, value unknown. I've searched online for the circuit, but nothing...
2011年8月16日 · Most Helpful Member. Aug 16, 2011. #2. A SMPS will typically deliver a DC voltage. If you just want 220 VAC to 12 VAC why not just use a simple transformer or AC output wall wart transformer. If you put 120 VAC in a 220 VAC transformer designed for 12 VAC out you will get 6 VAC.
