Latest threads in Hobby Electronics Basicsshow only best voted threads
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How do you solder this?
I found this chip: that will do all I need - step up 2v to 3.3v, very low quiescent current and a small package. Unfortunately it is far too small a package - a VSSOP with a pin spacing of 0.5mm. Does...
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9 years ago
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Which years for the 'current' ARRL Handbook?
I have a copy of AoE, but the other tome I hear recommended often is an ARRL Handbook. I know they pump a new edition out every year, but research shows that major changes to the material only happen...
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9 years ago
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OT: Length of the Meter?
I read the current definition of a meter is the distance light travels in 1/299,792,358 of a second. How did they come up with a number like that? Why not just call it 1/300,000,000? I also read the...
21
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9 years ago
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Complex Math Question
Is this correct... I have a complex expression Numerator/Denominator where Numerator is the complex conjugate of the Denominator. Am I correct that the net phase angle is twice that of the Numerator?...
3
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9 years ago
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Any Oldtimers Want To Play "What Is This THing ?"
Here's one of those old things you just pick up because it's old. It is a "portable test oscillator". That much is no mystery, but that's abo ut it. So I dig up a 90 volt power supply, actually by...
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9 years ago
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Analog To USB
Looking for a simple and inexpensive analog to USB hw module with sw drivers that I can code into. One or two channels. any input range. 12 bits or more. a kit would be OK. do not want to do a PWB...
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9 years ago
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Benchtop Power Supply Options
Hello again, It is time for me to acquire a better bench top power solution. Most of the time I will use it to power a breadboard for experimentation. I used a wall wart for awhile until it got super...
88
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9 years ago
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88 | |
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car 12v phone chargers
Why do they take longer to charge than mt wall charger. The output of my wall charger is 5v. Seems like my car should be able to imitate that level. ?? Thanks Ivan Vegvary
6
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9 years ago
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Any free reverse phone numbers look up sites anymore?
I wanted to look up a call I got this morning, I can't find a free reverse look up any more, I tried four, all want a payment. Know of any? Mikek
3
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9 years ago
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3 | |
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A tiny metal sliver on the inside of my index finger
could have saved my life. I was in my workshed which is about 60 ft from the house drilling some aluminum. I got a faint tingle in my hand, I touched the case of my drill a couple times and didn't...
24
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9 years ago
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Question on zero-crossing circuit
Hi all, I did a search the other day on zero crossing detector circuits and came across this nice one by Jim Thompson: I think I have figured out how it works, except for capacitor C1. What does it...
70
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9 years ago
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70 | |
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Some Might Find this Useful
I think it's pretty neat, and for those who don't automatically do the math in their head right away, useful.
6
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9 years ago
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OT: USPS tells entrepreneurs that American citizens aren't their customers
OT: USPS tells entrepreneurs that American citizens aren't their customers... ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete...
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9 years ago
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ADC Selection
Hello, I have some questions on how to go about selecting an ADC for an application. I would like to take a voltage measurement across a shunt. 1mOhm Shunt 500-1000 samples per second If possible I'd...
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9 years ago
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Opamp resistor magnitude
I have a question about the magnitude of the two feedback resistors on opamps. I am familiar with how to determine the ratio of the resistors to get the desired gain, whether inverting or not. What...
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9 years ago
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