Hobby Electronics Basics

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Help Identifying & Locating Parts

It's been a while since I have played with board level components, and I guess I need to return to school! I have been...
4 comments posted 22yrs
posted by louistroutbybee
4 comments posted 22yrs posted by louistroutbybee

unable to find the CMRR

Hi This is my first post on the group there is an opamp diff amplifier with no rf and ri Both i/ps are 0.5 mv and o/p i...
0 comments posted 22yrs
posted by sahasrara
0 comments posted 22yrs posted by sahasrara

Power a Luxeon Star with two AA batteries?

I'd like to power a 1-watt Luxeon Star http://www.lumileds.com/products/family.cfm?familyId=2 with two AA batteries. An...
13 comments posted 22yrs
posted by sorry
13 comments posted 22yrs posted by sorry

Something wrong

Hi, Based on this circuit, I have some strange results from simulations. 5V ___ | | \ / 2K \ | |-----------------------...
10 comments posted 22yrs
posted by tatto0_2000
10 comments posted 22yrs posted by tatto0_2000

GPS

Maybe this is off topic but does anybody know how you convert the gps position coordinace to distance? For instance If...
8 comments posted 22yrs
posted by Rodneykelp605
8 comments posted 22yrs posted by Rodneykelp605

Wifi

Hello, I'm lokking for a wifi (or other) solution to be used with microcontrollers, and wich is able to transmit data (+...
10 comments posted 22yrs
posted by qos1
10 comments posted 22yrs posted by qos1

Abbreviations

Can anyone define these abbreviations for me? ATM in video transmission FFT EPR in radio Thanks Graham
9 comments posted 22yrs
posted by grahame9
9 comments posted 22yrs posted by grahame9

Quick dB question

How do I calculatre if I have a 30v signal and I reduce it by -6dB? Graham
9 comments posted 22yrs
posted by grahame9
9 comments posted 22yrs posted by grahame9

localisation

Hello, I have three small Automated Guided Vehicle wich navigate in a 700*700 square feet area. Using à PC, i want to k...
11 comments posted 22yrs
posted by qos1
11 comments posted 22yrs posted by qos1

Power-efficient design

I'm planning a to build a solar-powered robot. Efficient solar cells, motors and electronics will of course be required...
1 comments posted 22yrs
posted by tim.auton
1 comments posted 22yrs posted by tim.auton

UK Electrical Transmission System

I am doing some research on the UK Electrical national gird system and looking for lots of info. I am after stuff like...
2 comments posted 22yrs
posted by grahame9
2 comments posted 22yrs posted by grahame9