Using multiple windings on two transformers to create one output at maximum power
Hi everyone, I’ve just resurrected a broken Weller TCP1 and need a 24v ac supply for it....
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Hi everyone, I’ve just resurrected a broken Weller TCP1 and need a 24v ac supply for it....
I’m interested in learning how to make a proper PCB rather than perf board with wires all over the place.
I recently bought a thinkpad T470 for a good deal, and it turns out that it was a good deal because the BIOS is locked with an admin password so I can't install an OS, or change any BIOS settings....
Hello,...
I'm currently looking into various DC DC converters and was confused that the Meanwell DDR-60 series only shows a typical rating but says nothing about the efficiency at idle. From AC/DC converters I'm used to have a curve that starts at idle and maybe 70% and goes to 100% load, having the peak at ninetee something....
I got it with https://sabrent.com/collections/hard-drive-accessories/products/ec-ch2b. But since I bought it in EU, it has that charger. Is there no alternative other than buying a whole new charger?
i can’t find ANYWHERE this ic chip, not even in chinese online stores. code is FMM862, laptop model is a Gateway GWTN141-10. it can also be another one that works. thanks in advance....
Hi all! I recently purchased some push-lights for my kitchen from my hardware store, and I stupidly didn’t read the package that said that they shut off after 30 mins. This is super inconvenient in my dark kitchen, and I can’t return them. I figured I might as well tinker with them, and any help would be greatly appreciated....
Hello! Someone suggested this "If the MOSFET is put into diode connection mode (connect the gate to the drain), you can force a small current (I recommend 1 uA–10 uA; 1 mA would probably be OK; 100 mA would result in significant power dissipation and could influence the results) and record Vds (which is equal to Vgs in this...
I’ve got an old oscilloscope and a function generator that I’m trying to use to play around and get more familiar with this kinda stuff. I’m mostly new to electronics (especially analog ones) and I’m having a hard time getting them setup properly....
Looking to replace the male connector in this picture. Any idea what it is called and where I can get it? I'm in Germany.
I have a acer c740 chromebook that has a cracked charging jack hoping I can find replacement part for it. Picture attached shows what's left of some number on it I think it's 150726+F4 not sure what the symbol is. The male end end is 3mm od 1.1mm Id if that helps.
Hi, I'm new here (never used this entire platform before, but as the askElectronics reddit is down I thought i'd follow the trail to lemmy and see what's what). Hopefully this works!...
Hi, I've been unable to ID the pictured capacitor to track down a spec sheet or source. Do any of you folks recognize it? Pictured are two different capacitors that look to be identical except for slightly different markings....
Right to the point: On a BPI-R3, should connecting the UART debug pins directly to the appropriate pins on a DB9 USB serial adapter (rx->tx, tx->rx, gnd->gnd) work? Because I’m just getting a garbled mess in my serial console. I’ve tried all different baud rates. I’m using a high quality serial adapter (Keyspan Tripp...
The recent post on using a lamp in series to limit potential fault currents has had me thinking about using them as above. Has anyone done this? I can see advantages, cost for one - wirewound resistors can be expensive. Visual indication of a varying load. Make it "short-circuit proof"..
I'm taking apart a broken tape recorder produced in the 70s (a Tesla B57, made in Czechoslovakia), to harvest some parts (inductors, switches, ...) and maybe reuse the case for some project....
Hello, I recently bought a USB A to C cable and it is pretty weird. It is a USB A to USB C cable, seemingly USB 2.0 but the A connector has 5 pins, the 4 pins of USB 2 and what looks like pin 7 of USB 3.0 so in the middle of the back row, the other pins of USB 3.0 are not there and the plasting moulding only allows for that one...
I'm planning to add a momentary switch to a single loop DC circuit. Will this cause any amount of resistance in the circuit? I'm a complete noobie when it comes to electronics, any resource links or clarification is appreciated. I know the type of material/width of wire and a pot will cause resistance but will any component put...
Salutations to Davide A. for this creation as an alternate.
Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage...
Hello. I'm a hobbist on electronics repairs, and I did some repairs on stuff powered from the wall socket before, using a serial bulb to protect the circuit in case there's a short. Now I want to troubleshoot a board that works at 3V and very low current (like no more than 100mA). So, how can I properly size the bulb I need for...
Solution...
I have a few old posts on the subreddit and i need to view one of them as i am reviving an old project. there is a comment on one of them that has the info i need. I never screenshotted that info....
I'm working on adding extra access control to elevator calling buttons and i would like to identify the connector type of the wires connecting elevator buttons to the elevator panel...