Hobby Electronics Basics

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Electromagnet Design

Electromagnet Design Question. I have a power source of either an actual car battery of around 600 Cold Cranking Amps O...
6 comments posted 18yrs
posted by blame
6 comments posted 18yrs posted by blame

Would T-junction help low current situation

I have a doorbell that uses 18V. I'd like to put a relay between so that I can record when doorbell rang (the relay is...
7 comments posted 18yrs
posted by test
7 comments posted 18yrs posted by test

How to sense motor current to actuate brake?

Greetings All, I'm using a servo motor to drive a slide and I would like to sense the current it draws in order to actu...
16 comments posted 18yrs
posted by etpm
16 comments posted 18yrs posted by etpm

convert 12V down to 9V DC

My kids' electric scooter has a 6V motor and battery. The 6V battery doesn't give enough juice, but a 12V battery I ins...
11 comments posted 18yrs
posted by mrdarrett
11 comments posted 18yrs posted by mrdarrett

LTI Lissajous explanation document

I teach an introductory course on basic electronics and instrumentation. I recently put together a document on using Li...
3 comments posted 18yrs
posted by ted.pavlic
3 comments posted 18yrs posted by ted.pavlic

rpm of a cordless drill motor?

What might be the typical rpm of a cordless drill motor? Or what is the typical gear ratio? Some single speed spin up t...
4 comments posted 18yrs
posted by jdoe
4 comments posted 18yrs posted by jdoe

SEPIC inductors size

Should SEPIC inductors be sized according to the average load current or the peak load current? For instance my load dr...
3 comments posted 18yrs
posted by spamme
3 comments posted 18yrs posted by spamme

Measurement of ghz signals

Hello, I've got a storage oscilloscope here with a bandwith of 6 GHz. Unfortunately only the default probes with 500 MH...
2 comments posted 18yrs
posted by jiffylube
2 comments posted 18yrs posted by jiffylube

Training & Jobs

=93Join us to make future=94 [B]FOR OPT/F-1 STUDENTS[/B] FREE TRAINING FOOD ACCOMODATION H1B PROCESSING [B]FOR L1/ L2/...
1 comments posted 18yrs
posted by documentum02
1 comments posted 18yrs posted by documentum02

cascading two dc/dc regulator

I use two dc/dc regulator to generate 12V and 5V output from 40V input. 40V --- LM5576 --- 12V 40V --- LM5576 --- 5V Si...
4 comments posted 18yrs
posted by ChungHuaLee
4 comments posted 18yrs posted by ChungHuaLee

Can anyone recommend a BUCK/BOOST Controller?

Can anyone recommend a BUCK/BOOST Controller? Preferably with integrated switches. Vin = 5 to 12V V out = 6.5V I out = 1...
4 comments posted 18yrs
posted by spamme
4 comments posted 18yrs posted by spamme

Strange how-to question(s)

Hello all, I own a vintage (1968) automobile, equipped with a vintage radio. The previous owner installed slightly more...
14 comments posted 18yrs
posted by dohc
14 comments posted 18yrs posted by dohc

Question on 30rpm motor

I have a little 30rpm motor that I use to turn fishing rods when applying epoxy to the guides. Unfortunately the 30rpm...
9 comments posted 18yrs
posted by john.menken
9 comments posted 18yrs posted by john.menken

Looking to build a transient generator

A product I am designing requires a series of lab tests to judge robustness against electrical transients. One such tes...
15 comments posted 18yrs
posted by Gerbermultit00l
15 comments posted 18yrs posted by Gerbermultit00l