Hobby Electronics Basics

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Pspice simulation question

I'm trying to check my work on an AC series-parallel circuit using the student version of Pspice. We are studying Mesh...
1 comments posted 21yrs
posted by iliveinatrailerpark
1 comments posted 21yrs posted by iliveinatrailerpark

How can I charge a 12V Car Battery?

This may sound a bit of a silly question, but currently I use one of the small 12V 7Ah sealed lead acid batteries to ch...
56 comments posted 21yrs
posted by junk1
56 comments posted 21yrs posted by junk1

Better op-amp buffer configuration?

Hi All, I realize that using a single-supply op-amp as a buffer may be one of the easiest circuit configurations in the...
3 comments posted 21yrs
posted by billcalley
3 comments posted 21yrs posted by billcalley

What is this type of dial/knob called?

I'm trying to find the type of dial that you can turn in one direction or the other without it stopping (unlike a potent...
14 comments posted 21yrs
posted by anonymous
14 comments posted 21yrs posted by anonymous

Eagle holes/pad widening

I'm a new user of eagle, and I've managed to get through designing my schematic to designing a PCB. I want to print via...
6 comments posted 21yrs
posted by mmcnospam
6 comments posted 21yrs posted by mmcnospam

Harmonic composition of a square wave

I know you can make a square wave from the sum of sinusoidals, but does this mean that if you look at a sine-wave that...
17 comments posted 21yrs
posted by davidd31415
17 comments posted 21yrs posted by davidd31415

Lubricant for a wierd problem

I have a pcb with 10 electrical gold plated contacts in a single line with 5 mil isolation between them. At any time, a...
10 comments posted 21yrs
posted by siliconmike
10 comments posted 21yrs posted by siliconmike

electronic timer block circuit

To day I have make a circuit which is efects timer circuit.this is stop any electronics timer lick clock.
2 comments posted 21yrs
posted by suman_25biltu
2 comments posted 21yrs posted by suman_25biltu

UIC option in SPICE?

I have read all I could find about the Use Initial Conditions (UIC) option in SPICE, but I still don't fully understand...
2 comments posted 21yrs
posted by billcalley
2 comments posted 21yrs posted by billcalley

cheapest electronics

I have a book full of various projects to build that I'd like to try. I have basically no electronics at home - a few c...
7 comments posted 21yrs
posted by rspinks1
7 comments posted 21yrs posted by rspinks1

use of American AC POWER ADAPTER in France?

Hello, This is pretty simple. I have a Samsung AC Adapter for my laptop computer. I am using it for the first time in F...
6 comments posted 21yrs
posted by harrisonmarshall
6 comments posted 21yrs posted by harrisonmarshall

core saturation

I was just thinking about core saturation and how it might be detected/measured and I remembered something about curren...
3 comments posted 21yrs
posted by galt_57
3 comments posted 21yrs posted by galt_57

Simple current supply for thermistors?

I'm looking for a basic, easy-to-build constant current source to drive thermistors, nominally at 0.1 mA. The thermisto...
25 comments posted 21yrs
posted by redbelly98
25 comments posted 21yrs posted by redbelly98