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.
OK i have a frequency counter. now I'm using this for RF. what probe setup do i need for this. or can i just use a scope probe set on 10x. measuring Chrystal's and such, mostly I'm well below 30 MHz. some around 10hrz. i know how to use a scope but this thing is new to me buy the way its a...
OK i got it open and i see what your talking about its no good for anything that i want to do with it. so drop back and punt i will have to figure out something else sucks that i cant use it but if everything went good i wouldn't have anything to ***** about and my wife would be happy.
well...
tcmtech
it is a model Lincoln ac-225-s it is a 225 amp welder 25v wile welding and 79v open voltage. i am going to have to regulate this down to 13.8 if i can but i would like to make it variable to 18 volts for testing some of the larger amps i build. i just got it about an hour ago it was...
OK i did some checking the welder is rated 230 ac at 50amps in 250 amps at 25 volts out at 20% duty cycle. so i should have no problem getting the 100 amps from this. i will have to build it for 250 amps but I'm not going to need more than 100 amps so i should be fine. now how do i regulate down...
boy oh boy this is small compared to the voltages that i work with. i work on wind turbines that can produce 1500 volts dc at 1000 amps. ive worked on 2.5 megawatt and 6.8 megawatt turbines. i just dont know how to make a small supply the theory is the same but i dont know about the small...
the transformer is out of a welder 230v 60 Hz ac to 24 to 28 volt "dont know yet i still haven't plugged it in to find out yet". an i am going to use a full wave out of skotty diodes. i am trying to run a hf amp 2sc2789 transistors about 12 to 16 of them. so i am trying to get close to no hum as...
OK here is the question i want to build a power supply 12-20 V 250 amp. i am trying to figure the capacitance needed i am coming up with 1.2 F am i close? or is my math off and how do i come up with what capacitance needed and can i use something else other than 25 v cap's. can i use 30 or 50...
OK well i did some checking on a few service manuals that i have for the MHz required for testing. on is a 30 and the other is a 50 MHz. I'm using it for the modulation testing i have a analyzer that wasn't cheap that one was a hit and a half at 4500. i use the analyzer allot. but i would like...
OK her it goes. i am looking for a oscop to work on UF vhf and UHF radios. i would like to get a scope that will work with what I'm doing. I'm getting more advanced in the shop. i do most of my tuning with a dimm meter and other gadgets for radio. I'm looking for something that i can use in the...
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