Hobby Electronics Basics

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One More Battery Issue: Charging

For those of you who 'chimed in' for me with regard to my scooter and the placement of another set of batteries, I have...
3 comments posted 19yrs
posted by mea305
3 comments posted 19yrs posted by mea305

fm radio

hello everbody.. I am planing to prepare a fm radio transmitter. It should cover the area of my college i.e.approx. 50...
6 comments posted 19yrs
posted by bhandari_tanmay
6 comments posted 19yrs posted by bhandari_tanmay

debouncing a 4066 switch?

I'm using an analog 4066 switch in an application where the input is an audio signal being passed to a speaker, I'm goi...
8 comments posted 19yrs
posted by panfilero
8 comments posted 19yrs posted by panfilero

NiMH power weight ratio

Just wondering if anyone knows the weight of these batteries? AAA 900mAH AA 2500mAH or will they vary between manufactu...
5 comments posted 19yrs
posted by chinsta00
5 comments posted 19yrs posted by chinsta00

fastest but pratical way to measure time

Suppose I want to measure a time interval. How precise can I get? In AOE it says TAC's can go down to the ps's which I...
24 comments posted 19yrs
posted by Jon_Slaughter
24 comments posted 19yrs posted by Jon_Slaughter

Earth Ground Test ? Hows it work?

Today at work the boss gave me a sheet on doing an "Earth Ground test" I connected at 100 Watt light bulb between 120 v...
1 comments posted 19yrs
posted by clannorm
1 comments posted 19yrs posted by clannorm

Blocking Capacitor

Hi all, I am running a laser diode off a varialbe pulsed current source with a variable current output and pulse width....
3 comments posted 19yrs
posted by Higgy_noSPam_
3 comments posted 19yrs posted by Higgy_noSPam_

Design of process control timer

I need help on designing a sequential timer to switch on and off atleast 3 relays in a particular sequence using timer i...
5 comments posted 19yrs
posted by srvenkatraman
5 comments posted 19yrs posted by srvenkatraman

FM demodulator

Hello again: I read the following statement: "The conventional method to demodulate [an FM] signal is to convert freque...
2 comments posted 19yrs
posted by mr.whatever
2 comments posted 19yrs posted by mr.whatever

Basic questions about digital phase locked loop

Hey, everyone, Hope you are doing great! I just started learning about digital phase locked loop. I have a lot of thing...
5 comments posted 19yrs
posted by tryyourbestok
5 comments posted 19yrs posted by tryyourbestok

AM modulation using multiplier IC

HI I need a simple circuit for AM modulation using multiplier IC .Please give links where i can find applications,datas...
1 comments posted 19yrs
posted by srvenkatraman
1 comments posted 19yrs posted by srvenkatraman

MAX232 capacitors?

I'm thinking of building something like this: http://www.circuitcellar.com/library/print/0503/moyer154/2305014-Moyer.pd...
6 comments posted 19yrs
posted by mrdarrett
6 comments posted 19yrs posted by mrdarrett

Using a SSR with Triac

Can I control a SSR with the out put from a Triac and still do phase control for dimming??? Andy
16 comments posted 19yrs
posted by spam4pyros
16 comments posted 19yrs posted by spam4pyros

Driving a line from an opto-isolator

Hello, I have a board with a 74HCT573 with 10K pull-ups on the inputs. This is connected to a sensor with an opto-isola...
9 comments posted 19yrs
posted by ianmazz
9 comments posted 19yrs posted by ianmazz