Hobby Electronics Basics

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Wireless Music Bridge & Hardwired Home Networks

Several years ago, I went to the trouble of wiring my entire house to access the net via coax, placing speaker terminal...
4 comments posted 20yrs
posted by jaygreg90
4 comments posted 20yrs posted by jaygreg90

Computer controlled curve tracer

Please forgive me if this is not the right group and if it isn't could someone point me in the right direction. I would...
0 comments posted 20yrs
posted by uriahsky
0 comments posted 20yrs posted by uriahsky

replacement for RC4558N and RC4558NB op amps

Have an old analog synthesizer that doesn't work. Was told to replace the RC4558N and RC4558NB op amps. Tried looking a...
15 comments posted 20yrs
posted by reedsteed2k
15 comments posted 20yrs posted by reedsteed2k

Power Supply grounds

I have a B+K Precision 1651 DC Power Supply. On the front panel, there's a banana jack marked "Ground" . The manual des...
2 comments posted 20yrs
posted by jdege
2 comments posted 20yrs posted by jdege

Caps in RC circuit

I am creating a long timing circuit using a CD4060. What technology cap is the most reliable to use in such a circuit?...
3 comments posted 20yrs
posted by N
3 comments posted 20yrs posted by N

'pullup' resistors

Hey all Complete noob here - so can someone explain the concept of 'pullup resistors'? Im looking at the datasheet for...
9 comments posted 20yrs
posted by simon_nospam
9 comments posted 20yrs posted by simon_nospam

under powering a device

Ok I have a wireless unit that came with a wall wart which was 12V. The unit draws around .30a running off 12V. I have...
2 comments posted 20yrs
posted by spam
2 comments posted 20yrs posted by spam

C/N and Eb/No relation?

Hi all, I notice that most paper use Eb/No to describe performance. But product datasheet use C/N. Why use these two me...
2 comments posted 20yrs
posted by zhushenli
2 comments posted 20yrs posted by zhushenli

Concatenate String in Verilog?

Hi all, I want to open a lot of files and read data to reg. something like //-----code-------- $readmemh(".\\pattern\\0...
3 comments posted 20yrs
posted by zhushenli
3 comments posted 20yrs posted by zhushenli

Hi Electrons!!!!!!!!

Hello everyone, I'm a first year electronics engineering student and I'm very excited about this field. I want to "make...
4 comments posted 20yrs
posted by sandeep3chalia
4 comments posted 20yrs posted by sandeep3chalia

puzzled with the negative feedback system

In the negative feedback system ,why should we consider the feedback block as an isolate block to the amplifying block?...
2 comments posted 20yrs
posted by zhenyuanwu
2 comments posted 20yrs posted by zhenyuanwu

Jtag

Does anyone has the schematic of the board of a kaon 230 to make a jtag? thanks
0 comments posted 20yrs
posted by migmad78
0 comments posted 20yrs posted by migmad78

dc power consumption

I have a device that uses 12vdc and 120ma. If i supply the device with a transformer that produces 500ma @12vdc, will t...
8 comments posted 20yrs
posted by johnmclaren_99
8 comments posted 20yrs posted by johnmclaren_99