Recent content by Alex Hughes

They explicitly said in the book that if the input voltage lies within both reference values, the output will be positive. You can read it here. Figure 3-12 is the diagram I attached above. I've caught errors in this book before, is this another one of those errors?

So I've been reading an intro book to electronics and I got to a section about operational amplifiers. It talks about different uses of them and how they can be used as comparators. It then talks about a specific comparator called a window comparator which will output a positive voltage if the...

Wow, that was the best explanation I've received in a long time. Thank you very much.

Hello, I'm new to electronics and I'm reading a book currently to learn more about the topic. I'm currently on a section where I'm building circuits where I'm using a transistor as a switch. I decided to experiment with the circuit they gave me and put it in a simulation software called Proteus...

Thank you phinds, that makes sense. If anybody else has any books they recommend or links they can post. Please do so!

Hello, I'm currently getting my degree in mechanical engineering but have lately taken an interest in electronics. I've ordered several books and have learned a ton about resistors, capacitors, transistors, diodes, etc. However, every circuit I have made so far has been one that somebody else...

Also, the book I'm reading is Electronics for Dummies by Doug Lowe

Thanks a bunch Tom, that helped a lot. But, if the circuit doesn't have a load (such as a resistor connecting row 9 to row 10, then how does the current get back to the AC source. Doesn't current have to get back to the source in order to complete the circuit? In the diagram the book gave, if...

Ok so I've been reading a book on electronics and I got to a section that talks about full-wave bridge rectifiers. This is the diagram the author gives: In this diagram he says the D2 and D4 diode are forward biased. But, doesn't the current flow through D2, goes through the resistor, and then...

So I have two formulas for calculating voltage drop. The first is: Vdrop = Vin * R1 / ( R1 + R2...). This let's me calculate the voltage drop on the first resistor in a series of 2 resistors. You can also extend this to more resistors in series just by summing all the resistors. However, I do...

Thanks everyone, your answers helped

I understand the basics of how capacitors work. If you hook one up to a power source, negative charge will build up on one plate, and positive charge will build up on the other plate. As the charges build up, an electric field forms between the plates and a potential difference is established...

Thanks. Sorry I'll keep that in mind. Forgot you answered that in one of my questions earlier.

Thank you that helped a lot.

Thanks, that makes sense