# Tagged Questions

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1answer
73 views

### Practice for complex electronic circuits [closed]

I'm self-learning electronics; I've watched Anant Agarwal videos and read his book and another book "Electronic Devices And Circuit Theory- Robert L. Boylestad". But, now, I need to practice more on ...
3answers
177 views

### Practical designs/practices for home electronics

I need an automatic voltage stabilizer. I'm thinking about building my own. I've searched the internet and consulted several books. The diagrams in books show only the bare bones, basic design that ...
1answer
105 views

### Is it practically okay to use darlington triple?

I need to control a very high current in my project. I'm planning to use darlington formation with three transistors. I'm planning to use BQ24450 to charge a group of 12V acid-lead battery. ...
3answers
129 views

### Increasing precision of a practical opamp circuit when the input signal is very small

I have a sensor which outputs a normally distributed baseband signal with cut-off frequency of 100Hz, whose mean is ~1mV and variance is (0.1mV)2. I want to amplify it about x1000 times by using TL084 ...
4answers
1k views

### MIMO: How Can Two Antennas So Close Together Receive Different Signals?

I'm trying to understand how MIMO (as used by 802.11n wi-fi and some upcoming cellular data standards) works in practice. I understand at least the gist of the theory of spatial multiplexing. What I ...
3answers
2k views

### Difference between configurations of unity gain buffer using op-amp

Is there any practical difference as to how a unity gain buffer using an op-amp might be configured? For example, the input signal can be connected to the noninverting input and the feedback to the ...
1answer
360 views

### Transfer Function of Non-Ideal Transformer

What is the mathematical relationship between primary and secondary windings? It can be either in the s-domain, or a time domain expression. This expression must contain all realistic parameters, ...
1answer
212 views

### How should I write a feasibility study report?

I may be called upon to write a feasibility study report for consumer hardware (to be manufactured) and/or a service to be offered to clients in the near term. What is the proper technique here? ...
3answers
2k views

### Sample Application with LHI 778 PIR Sensor

For a motion detecting application I found a sensor with code LHI 778. If you look at the datasheet in the link, the characteristics of its internal FET transistor is not specified and there is no ...