Hobby Electronics Basics

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Input Impedance of SIMPLE Circuit

Can anyone figure out the input impedance of the circuit attached here: http://physicsforums.com/showthread.php?t=73070...
64 comments posted 21yrs
posted by gaya.patel
64 comments posted 21yrs posted by gaya.patel

Help with understanding/programming a DMM

Hello everyone, To begin, I know next to nothing about circuits, Digital Multimeters, and the like. Your patience with...
1 comments posted 21yrs
posted by dgoodwin
1 comments posted 21yrs posted by dgoodwin

Reading Mil Std 1553B output

I have a marine navigation eqpt fitted with an output port (7 pins) which I know has Mil Std 1553B output. I need to ta...
10 comments posted 21yrs
posted by mnitin73
10 comments posted 21yrs posted by mnitin73

combining RS232 messages

I have the following eqpt a.Gyro with RS232 or RS422 output (NMEA word $HEHDT ...) b.Log with RS232 output (NMEA word $...
8 comments posted 21yrs
posted by mnitin73
8 comments posted 21yrs posted by mnitin73

electronic components online

I'm from Belgium ( somewhere in Europe ) , can anyone tell me where I can buy electronic components on-line in the US ?...
2 comments posted 21yrs
posted by williamdob
2 comments posted 21yrs posted by williamdob

how to control LED array?

Hi - I'm working on a project to make an 8x8 LED array. The idea is that the anodes in each row are tied together, and...
18 comments posted 21yrs
posted by mnoone.uiuc.edu
18 comments posted 21yrs posted by mnoone.uiuc.edu

A couple basic questions regarding a ADC

Hi - I'm working on interfacing a TI ADS1252 ADC (http://www-s.ti.com/sc/ds/ads1252.pdf) to an Atmel AVR (an 8b microco...
4 comments posted 21yrs
posted by mnoone.uiuc.edu
4 comments posted 21yrs posted by mnoone.uiuc.edu

making thermocouple temp probes?

I've got some 1/8" OD 316 stainless tubing on order from McMaster-Carr, already have some thermocouple wire rated for 2...
8 comments posted 21yrs
posted by No_Spam
8 comments posted 21yrs posted by No_Spam

Electronics WorkBench Purchase?

I found a site on the web that disposes of software, one of the products is a complete version of Electronics WorkBench...
10 comments posted 21yrs
posted by james.douglas
10 comments posted 21yrs posted by james.douglas

free pic programmer

I am trying to use the programmer from http://members.aon.at/electronics/pic/picpgm/index.html I have built the circuit...
11 comments posted 21yrs
posted by kayleemac
11 comments posted 21yrs posted by kayleemac

Circuit for reversing 8 data lines?

I'm trying to solve a little problem with a (hopefully) simple circuit, and I'm not really sure where to start searchin...
8 comments posted 21yrs
posted by jmREMOVEorg
8 comments posted 21yrs posted by jmREMOVEorg

rs 232 signal safe for computer?

I have a system giving an RS 232 output with logical 0 at +15V and logical 1 at -15V. Is this signal safe to connect to...
2 comments posted 21yrs
posted by mnitin73
2 comments posted 21yrs posted by mnitin73

LM75 placement

Hi, I am going to use LM75 to measure temperature. However, I have other electronics inside the same PCB such as MCU an...
1 comments posted 21yrs
posted by eehobbyist
1 comments posted 21yrs posted by eehobbyist

H1102 transformer functions

Hi, I saw the datasheet of pulse H1102 ethernet magnetic but cannot understand the theory. I want to know what is the f...
1 comments posted 21yrs
posted by eehobbyist
1 comments posted 21yrs posted by eehobbyist