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Yes, I recall the identity you mention. For any polygon the sum of their interior angles is given by,
S=180(n-2), where n=sides
But this problem is a little bit more complicated. It requires a construction. Otherwise it cannot be solved. If somebody has ideas on how or what to do, it would be...
The problem is as follows:
In the figure. Find x.
According to my book the answer is 15 degrees.
However I don't know how to solve for this problem. Since I am not good with constructions, perhaps someone here can help me?
The thing is that this must be solved using only synthetic...
I am confused exactly on the maximum current capacity of these wires, assuming the typical copper wire. Google says for the 18 AWG that it is 16 amps. But it doesn't seem right. How about for 20 AWG and for 22 AWG?. Again Google says it is about 10 amps for the 20 awg for which it mentions that...
Hello. I want to know if is it safe to use a battery holder with their wires attached to a 2.1 mm barrel dc jack for a radio.
The unit is center negative and as far I can tell from the users manual would require a source of 200 mA and 4.5 dc V. There are some adapters here and there but judging...
I dind't know that. But from your answer it seems that I require to connect the radio's ground with the earth ground and the circuit ground.
Am I getting you right with this?. I mean, if I were to obtain better results, should this be the way to go?.
My receiver, which I mentioned above, does...
To be honest I feel my question is still unanswered. Can such circuit be used in a telescopic antenna yes or not?. I can use an aligator clip to connect the antenna to the output of the capacitor labeled
This guy used an FM active antenna circuit for his UV-3R Baofeng receiver.
Around second...
I've found this circuit here:
https://www.learningelectronics.net/VA3AVR/circ/activant.html
The diagram and idea came from the late Tony Van Roon who made this as an active antenna booster for AM/FM/SW bands.
The circuit seems to be an amplifier but I don't know exactly the logic behind it...
I know that. But what I intended to ask was for an alternative instead of having to turn off the router. I was thinking in another device which could act as an adapter or something which could work like plug in the wall as indicated. Turning off the WLAN function in the router is not exactly the...
Howdy!. Recently my phone company has installed a phone as an update to the existing copper wire system which was installed in my home. However this requires the phone to be connected to a cablemodem in order to work. Needless to say that this is not very helpful for me as I suffer from EHS and...
Howdy!. I'm intending to find a replacement cable for my cablemodem unit. The existing cable that the phone company installed is a screw in terminal on both ends of the coaxial cable with one end connected to the modem and the other connected to a splitter.
What I intend to do is to replace the...
Hello. I have an appliance that id like to install on the wall on my bedroom. Its a broan exhaust fan. The unit only operates using 110v and my system provides 220v. I have been looking for ways to solve my problem but the suggestions do not apply to my case. These include.
Changing the double...
Thanks for the clarification. I re-read the #2 post from where you used ohm's law. As mentioned I thought that this was not recommended to get an "exact result". But it looks that a raw estimation is okay for this application. Still, I am left pondering. Will it be proven using nodal analysis...
Okay. Understood about h_fe and the "rule of thumb" you mentioned, it looks that I have to review some of the basics that you have said, personally I thought it could be analyzed by mere circuit analysis.
Again, I was not sure if the collector current was 200 mA, since this was the only value...
Alright by re adjusting the above equations it would become into:
Not sure why i_base=I_collector/10 ? Does it mean that the gain is just 10?. If so why?. I'm assuming that this comes from the fact that Ic=ib x beta
From this I obtain the resistor value should be 190 Ohms (provided that is...
Supposing that the transistor that I intent to use is a 2N3904 looking at the datasheet mentions, (see 2N3904 ) the collector current is 200 mA. Therefore by doing some circuit analysis (see figure from below),
Because laTex seems not functioning properly in the forum I had to resort to...
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