Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
I have a 1millifarad 2700(3150 Surge) volt cap bank that I need to build a charging supply for. initially I was using full rectified MOT with 5k ohms for current limiting. it would charge to around 2kv within 20 seconds. I want to see the full potential of 2700 volts, but need some ideas. I...
is there an easy way, or rule of thumb to identify whether a transistor circuit is common base, common emitter, or common collector? Im trying to research and am a little lost. thanks
when using an oscilloscope to make measurments across components to a mains connected device, is it better to put the isolation transformer on the scope or the device being tested?
im studying for an electronics certification exam and I had a few problems I need help explaining. I have attached 4 screenshots of the questions I need an explanation for and how to slove them.hopefully explained in a way that's easy to remember. the questions are #46, #53,#73, and #90. the...
i have a question about RC highpass filter and LR lowpass filter. I attached a diagram. the top one is high pass RC. the bottom one is low pass LR. this is in reference to basic speaker crossover. My question is, can the 8 ohms of resistance of the speaker itself take the place of R1? or does...
just for fun I removed the secondary from a microwave oven transformer and wrapped a turn of 00 gauge wire inplace. it is just for fun for melting screws, bolts, and nails. it works great, but I wanted to get an accurate measurement of the current flowing through it. I picked 4000 cause its an...
hello, I just picked up a duracomm dps-55 smps power supply that im trying to locate a schematic for.
it is rated for 13.8v 55 amps more info about it can be found here:
**broken link removed**
thanks!
hello, my clamp on ammeter is rated for 400 amps max. I am looking into increasing this to 4000 amps. I know that it is possible, but looking for some more input and suggestions. I could possibly wind my own 10:1 transformer but not exactly sure how to go about it. please advise! ty
im planning on studying for the ISCET Associate Certified electronics technician exam. I am wondering if anyone on this forum has any experience with this exam or the eta-I certifications? what study materials did you use? I used amazon to look up some of the books that are offered on iscet's...
im fixing a smd rework station. I found a bad triac that was preventing the heating element from working. I also found 2 capacitors with an ESR of over 9 ohms. I was able to find one of them im my parts bin and replace it, but I have a question about the other one. the capacitor(C6) is a 1uF...
looking for some advice or a recommendation for a new soldering iron. I recently broke my 30 watt iron and looking to replace it with something a little better. im looking for a stand alone, not a station, because I put It in my back pack and take it to work with me. ive been looking on ebay and...
the other day my yihua 8508D heat gun stopped working. the display comes on,but no heat or air flow. I have verified that the air pump works outside of the unit. there is some info on the unit here:
https://www.alibaba.com/product-gs/216305021/YIHUA_8508D_diaphragm_pump_Hot_Air.html...
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