Hobby Electronics Basics

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Testing I/F Frequencies

I am building a 2m/6M radio receiver and studying it's design at the same time. I am "lost" when it comes to visualizin...
1 comments posted 20yrs
posted by james.douglas
1 comments posted 20yrs posted by james.douglas

Gaussian pulse

Regarding the Gaussian pulse of transmitter it says that the spectrum is also gaussian. I assume that it means the freq...
2 comments posted 20yrs
posted by papageorgiou40
2 comments posted 20yrs posted by papageorgiou40

small pF capacitors - their uses?

Sorry for the very basic question - I am currently learning electronics! What is the purpose of these tiny, pF capacitor...
14 comments posted 20yrs
posted by aheyn
14 comments posted 20yrs posted by aheyn

Transformers and regulators

Since I could not get the dual split power supply voltages I needed from one of my transformers I decided to use two "s...
7 comments posted 20yrs
posted by Abstract.Dissonance.hotmail.co
7 comments posted 20yrs posted by Abstract.Dissonance.hotmail.co

Does Cadence have sth like Synopsys SNUG?

Hi all, I am a fresh Cadence NC-Verilog user. Does Cadence have the community like Synopsys's SNUG? And does Cadence ope...
2 comments posted 20yrs
posted by zhushenli
2 comments posted 20yrs posted by zhushenli

Help modifying SR Latch to JK Latch

Hi, I am trying to convert SR latch to JK latch. I have looked up several places on the web and I don't understand some...
2 comments posted 20yrs
posted by moatesim
2 comments posted 20yrs posted by moatesim

PIC and 10-Bit ADC

Okay something again I need to wrap my head around. My PIC datasheet says that it reads the 10-bits from a 16-bit analo...
25 comments posted 20yrs
posted by b.clarke
25 comments posted 20yrs posted by b.clarke

Why are car alarm starter relay normally closed?

Why are car alarm starter kill relay designed to be normally closed? It would make practical sense to make the relay no...
3 comments posted 20yrs
posted by SamN
3 comments posted 20yrs posted by SamN

connect telephone microphone to guitar pedal

Hi all, In the 1960's the band Fairport Convention kick-started UK electric folk, and the fiddle player Dave Swarbrick...
10 comments posted 20yrs
posted by spam.ontoast
10 comments posted 20yrs posted by spam.ontoast

producing ultrasound

Is there any way of producing ultrasound without applying a current through a crystal (such as a mechanical method). Fo...
15 comments posted 20yrs
posted by will_usher
15 comments posted 20yrs posted by will_usher

Free Samples

I'm supprised to find that many manufacturers give out free samples(competely free!!). I'm wondering if anyone has cons...
11 comments posted 20yrs
posted by Abstract.Dissonance.hotmail.co
11 comments posted 20yrs posted by Abstract.Dissonance.hotmail.co

circuit board programs

My first time doing a printed circuit board. I've gotta send out a printed circuit to be fabbed that actually has a sma...
3 comments posted 20yrs
posted by kellrobinson
3 comments posted 20yrs posted by kellrobinson

Transformer hooked up wrong

Say you have a CT transformer running into a a bridge then the bridge goes into two series capacitors with the CT into...
1 comments posted 20yrs
posted by Abstract.Dissonance.hotmail.co
1 comments posted 20yrs posted by Abstract.Dissonance.hotmail.co

HELP:electronic billboard

can anyone please help me in doing my project.its an electronic billboard running display using only logic gates and LE...
6 comments posted 20yrs
posted by rqs2kster
6 comments posted 20yrs posted by rqs2kster

4 digit 7 segment display

I am doing project of -24v to + 24 v regulated power supply with 4 digit 7 segment display.So please provide me some ide...
4 comments posted 20yrs
posted by karthik_eeeng
4 comments posted 20yrs posted by karthik_eeeng