Hobby Electronics Basics

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B&K 4007DDS sweep generator

Anyone familiar with this or 4013DDS? Normally, one can read the manual for a product before buyng to get a pretty good...
30 comments posted 17yrs
posted by oparr
30 comments posted 17yrs posted by oparr

Potential of a capacitor at each terminal

Hi, I've come across a question concerning the following circuit: - Voltage Source: Node 0, Node 1. (Voltage Vmax) - Re...
2 comments posted 17yrs
posted by hc.figueroa
2 comments posted 17yrs posted by hc.figueroa

sampling 240VAC

I'm looking for the best way to sample the 240VAC waveform from a powerline well staying within my design constraints....
34 comments posted 17yrs
posted by somewhere
34 comments posted 17yrs posted by somewhere

dB and sound pressure

I can't quite grasp the connection between microphone sensitivity and sound pressure level. I am trying to use a plain...
13 comments posted 17yrs
posted by not
13 comments posted 17yrs posted by not

Load panel terminology: stab?

It's used in a load panel sticker that says something like "do not put more than 150 amps on one stab". What's a "stab"?
32 comments posted 17yrs
posted by moi
32 comments posted 17yrs posted by moi

OP-Amp and A-D Question

Let's say, for example, I have an Op-amp set up with a gain of 1, if I have 2.5V at the - input and 2.7V at the + input...
7 comments posted 17yrs
posted by regor
7 comments posted 17yrs posted by regor

Alligator Clip Cable for Signal Generator

Long ago I lost the alligator coax cable with a BNC adapter on the other end. I recently found a coax, 75 ohm?, with an...
5 comments posted 17yrs
posted by wolftracks
5 comments posted 17yrs posted by wolftracks

Signal Processing Via USB Port

If all you have to do is buy a $200 netbook, an A to D converter and download some software isn't it a waste of time scr...
26 comments posted 17yrs
posted by BretCahill
26 comments posted 17yrs posted by BretCahill

ORCAD

Hi, I'm looking for a (free) student version of the latest OrCAD schematic capture and PCB design. Where can I download...
1 comments posted 17yrs
posted by bmw318
1 comments posted 17yrs posted by bmw318

How best to make connection mosfet to fat wire ?

I have built a regulator to control battery charging using 4 IRF2804 mosfets, driven with a 555 timer, and it works ok,...
7 comments posted 17yrs
posted by argyle1nospam
7 comments posted 17yrs posted by argyle1nospam

op-amps with AA batteries?

I am a novice trying to design simple circuits. Most of my ideas require op-amps and are things I would like to run off...
23 comments posted 17yrs
posted by rabiticide
23 comments posted 17yrs posted by rabiticide

Can it work ?

I would like to use a diode to act as a step down tranformer to drive a small ac 115 volts relay from the 230 volts ac....
8 comments posted 17yrs
posted by mowhoong
8 comments posted 17yrs posted by mowhoong