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thank you all for the great information. This is the transformer I bought...
https://www.amazon.com/Edwards-Signaling-598-120V-Transformer/dp/B007B79HR2/ref=sr_1_1?ie=UTF8&qid=1529556368&sr=8-1&keywords=edwards+24v+transformer+doorbell
it says it has "Non-regenerative thermal overload...
Ha, okay... what the heck is a VA? yes, the transformer is 30 VA. How did I get through electronics school (ahem, self taught) without ever hearing of a VA? Included picture of my simulation showing 28 Amps.
<a href="https://imgur.com/CHQXObc"><img src="https://i.imgur.com/CHQXObc.png"...
Thanks for the replies. Klaus, i have looked for a datasheet and was not able to find one. This doorbell ringer is circa 1961... the model number doesn't even turn up in a google search. I've ordered a 24V transformer capable of 30A. That seems like an amazing amount of current... I think I...
Hello all, my house's doorbell circuit uses a 10:1 step-down transformer... I'm getting 11.6 Vac on the secondary. Problem is if I want to install and power a Ring doorbell unit (Pro), it requires 16-24 Vac. It's easy enough to order a 24V transformer... but if the Nutone chime is designed to...
Hello all...
I am starting to learn the C programming language, and the book I am learning out of strictly uses the PIC18 series, and no PIC16 series. My previous experience has been coding in assembler on the PIC16's, so now I'm a little lost as to which PIC18's to get. If you could please...
ah, okay, seeing that now. derp! hmm, i suppose if they are still available, i should just get the same part. Also, according to mouser's datasheet, it looks like the 2N2924 is a closer match as far as hfe goes. I'll just get some of each, if one doesn't work i'll try the other. thanks so...
So cool! I just bought one on e-bay for $12. :)
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can I ask another question regarding the 2N3392? Below is a picture from Mouser's website... apparently one can still buy the 2N3392, although I'm not sure it's the same transistor. Notice the @ Ic (mA) column, why is it...
I'm trouble-shooting a pre-amp from a 70's Fender Rhodes electric piano. Pretty simple device... but I realized that I should poke around to see what equivalent transistors I might need. With rare exception, the designer selected 2N3392s for his go-to transistor. Amplification, buffering...
Just curious about something, I'm working with a circuit that has a single sided supply, high rail is 8 volts, low rail is ground. If I have a component (in this case it's a relay) whose max voltage is 5 volts, what is the best way to lower my rail voltage for this component? Obviously I could...
I can't say exactly what is right for you not knowing your level of education, but I think the following would be a very good beginning covering all aspects of the analog world. These are textbooks, and I highly recommend you get the lab books that go with them and do the labs as well...
okay, i built the above circuit and WOW!, that's looks good. My scope can't even measure the signal when the JFET is off at lower frequencies (300 Hz). I do notice that at higher frequencies (5k) you start to see a small signal.
So I have two questions... as my scope measures it at the...
I think for me, since I'm just learning all of this stuff, I'm trying to not purposefully run into clipping of the signal... I need to learn how to find the right bias points in all sections of this particular pedal, which is a bucket-brigade style delay. :)
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