Hobby Electronics Basics

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better batteries

is it me or are some batteries better than others?? It seems my digital mavica works better with alkaline batteries tha...
7 comments posted 21yrs
posted by joekopasek
7 comments posted 21yrs posted by joekopasek

Above 108MHz with FM radio (or other)?

greetings all I was wondering if there is any type of receiver I can find/purchase that would be capable of tuning abov...
45 comments posted 21yrs
posted by michael_j
45 comments posted 21yrs posted by michael_j

siren circuit

Is John Popelish here? I changed the labeling since my last post. I am still having difficulty to fully grasp this circ...
1 comments posted 21yrs
posted by aquelle
1 comments posted 21yrs posted by aquelle

PTC Thermistor heater 12 volt ?

I am trying to make a budget heater setup to heat the filter separator on my old truck and use a diesel + Veg oil mix (...
2 comments posted 21yrs
posted by rkpatt758
2 comments posted 21yrs posted by rkpatt758

What's Happened to Google Groups?

Google Groups has changed radically. I used to be able to do a search, find an indentured list of posts, navigate the p...
30 comments posted 21yrs
posted by bob
30 comments posted 21yrs posted by bob

Please help - Sony IR Transmitter

Hello, I am a beginner in PIC & Electronics. I have a project to create an IR transmitter for Sony DVD Player (DVP-NS57...
0 comments posted 21yrs
posted by indras
0 comments posted 21yrs posted by indras

Measuring low frequency average voltage

I have a question about measuring the average voltage being delivered to a circuit. Basically what I want to do is tap...
1 comments posted 21yrs
posted by mikedeskevich
1 comments posted 21yrs posted by mikedeskevich

Are white LEDs amenable to use as a strobe?

Would a white LED, a Luxeon Star for example, be useful as a strobe light for checking engine timing etc.? Thanks, ERS
15 comments posted 21yrs
posted by etpm
15 comments posted 21yrs posted by etpm

Hard wiring battery toy to a DC source

Hello all, I have three of those Star Wars animated sword battling figures (Darth Mul and the two Jedi dudes). When plu...
3 comments posted 21yrs
posted by kracus1
3 comments posted 21yrs posted by kracus1

Heat Wire

Anyone knows 'heat wire' manufacturer, 'HITECH21, INC.'? Or, other manufacturers of heat wire?
2 comments posted 21yrs
posted by forsong
2 comments posted 21yrs posted by forsong

Need help analyzing a circuit

I'm new to electronics so I'm not great at circuit analysis. I've been reading some books and I understand some simple...
15 comments posted 21yrs
posted by concentricnews
15 comments posted 21yrs posted by concentricnews

555: strategies for series step-up transformers

Hi all, My projects involve rectified 1500-2000 volt power supplies with only modest power requirements, around 500 mW...
1 comments posted 21yrs
posted by dlwebb
1 comments posted 21yrs posted by dlwebb

OT: Duplicate posts - Google problem

I'm seeing 3, 4 or more duplicates of some posts these last few days. Enquiries point to a problem at Google Groups, who...
1 comments posted 21yrs
posted by terrypinDELETE
1 comments posted 21yrs posted by terrypinDELETE

Driving a DS1393 from a PIC or AVR

Hi, Has anyone tried talking to a DS1393 or similar 3-wire RTC from either a PIC or AVR (or similar) - these RTCs are no...
4 comments posted 21yrs
posted by mdeblis
4 comments posted 21yrs posted by mdeblis

One set of speakers with two sources

Sorry if this question is too basic. I have my computer connected to a set of speakers (amplified sub-woofer with satel...
2 comments posted 21yrs
posted by aamarks
2 comments posted 21yrs posted by aamarks