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Here is my opinion about what is happening here based on the discussion you guys had above. Say you check the loop stability of the top amplifier. The bottom amplifier presents a pretty low output impedance (looking down into n4) while its loop gain is high. However, the bottom amp output impedance starts to increase with with frequency as its loo
If S1 and S2 are parallel connected, the effective number of secondary turns is 7. You need to review the circuit schematic to verify that the secondary windings are actually parallel connected.
Hi all, Many of you may be interested in building electronics DIY kits. Building kits is one of fun and effective ways to learn electronics as well as soldering skill. The most classic and practical kit is LED clock kit for sure. Available clock kits in market provide basic clock features like time and alarm setting. However, if you are looking
I did simulate a microstrip line in a EM solver, and extracted the distributed circuit parameters in a matlab script. With these parameters, I can build a circuit in ADS to which has comparable S-parameters with the EM solver simulation. This gives my linear circuit parameters. Further, I introduced some dielectric materials onto the microstrip
Not knowing the dielectric constant of the medium between the two conductors and the effective area it should not be possible to say any thing between the spacing between the two conductors. Also the value of C = 0.00132 pF does not seem realistic as the stray capacitance contributed in a regular circuit may exceed this value.
I want to design an underwater optical communication system with high speed and bandwidth to show the effects of absorption, scattering and turbulence. I need ideas on the circuit design for the transmitter and receiver. I would also need to simulate it on Optisystem and Matlab. I need ideas on how to simulate the processes on these programs. Thank
At the output, looking into each output you will see C2 in parallel with the effective capacitance seen looking backwards into the feedback cap C1. If you define a feedback factor b=C1/(C1+C1+Cin), where Cin is the input cap of the OTA to ground, then looking back into C1 you will see Ceff=(1-b)C1. Then your load cap for each output is C2+Ceff. Wh
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can we take Cdiff +C1||C2 as the effective lead to lead capacitance?Near. Not C1||C2, it's a series circuit, Cdiff + C1*C2/(C1+C2). CANH pin then Cdiff+ Ci +C1 is the total capacitange.No, Ci and Cdiff values are representing the same physical capacitance. Cpin = Ci + C1
Hi this is my attempt to create a cheap but effective 1-60MHz measurement marker generator and simple tracking generator for a Tektronix 491 vintage spectrum analyzer. The nominal levels of the input of the analyzer are shown in the right. Calibration, a must for old machines, should be of no importance with my plugin, since the DDS generated mar
Extra circuitry doesn't need big consumption, rather area. And it is more effective.
Hi, What will be the best and low-budget educational materials and platforms? Learning materials and platforms as in books, simulation softwares, development kits (from which manufacturers?), affordable tools. What I already know: 1. C and C++ programming. 2. Python 3. Built a few projects with Arduino 4. Raspberry Pi Can anyone sugge
Hello all, I have a question regarding two patch antenna array. does the distance between the patches varies the gain? (they are separated with at least lambda/2 so neglect coupling) I think that it does not, since the far field is composed of two elements: 1. Element pattern - does not change 2. Array factor - does not change at the max sinc
When I use 1M Ohms for the oscilloscope input during measurement, the clock signal looks oscillating. I think it is due to signal reflection and mismatch. However, when I simulate the circuit with 1M Ohms loading, the output signal is not oscillating... You are apparently simulating without realistic cable (e.g. 50 ohms transmission
Hi, What will be the best and low-budget educational materials and platforms? Learning materials and platforms as in books, simulation softwares, development kits (from which manufacturers?), affordable tools. What I already know: 1. C and C++ programming. 2. Python 3. Built a few projects with Arduino 4. Raspberry Pi Can anyone sugge
Mobile device 5G antenna specification? There is no clear antenna specification not even for 4G, 3G or 2G mobile phones. Sometime is mentioned the OTA test (over the air) that have to pass, especially the antenna ERP (effective radiated power), but is up to each manufacturer how is designing the system to meet these specifications. In 5G due to MIM
I found all the LED diode have a minimal forward voltage of 1.7V. Anyone knows that whether there are some LED diode with forward voltage less than 1V, and the forward current is less than 20mA? Thank you.
1. The principle of operation of a hair dryer The hair dryer also has the same working principle as the electric kettle, electric stove, ... When powered, the resistance will be heated. At this time, the fan functions to blow airflow through the heating coil. Therefore, the air heated by resistance is dry hair. The chromium and nickel materials
What happens when a CO2 gas molecule in the atmosphere absorbs a photon of infrared radiation which has been emitted by the Earth?s surface? What about photons that are coming in from the Sun? As far as I can see, incoming photos would also collide with some of the CO2 molecules. So why does more heat come in than goes out? Any assist
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