Hobby Electronics Basics

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UPS Voltage?

I just bought a digital multimeter and wanted to check my battery and UPS. When I check the voltage of my battery it gi...
10 comments posted 17yrs
posted by e4c5f4
10 comments posted 17yrs posted by e4c5f4

A possibly dumb LED Question

Can a cool-white LED be "softened" in color by shining it through a colored thin plastic film, or thin tinted piece of...
14 comments posted 17yrs
posted by me
14 comments posted 17yrs posted by me

Stepper Motor Connector

I found some nice stepper motors in the surplus bin, but I don't have any matching connectors. The ones on the motor ar...
4 comments posted 17yrs
posted by chrish57
4 comments posted 17yrs posted by chrish57

32X8 SRAM Replacement

I need to replace a SRAM chip on a piece if test equipment it is a HM62256ALP-8. A 28 pin DIP. It is a 32X8 Hi-Speed SR...
2 comments posted 17yrs
posted by uriahsky
2 comments posted 17yrs posted by uriahsky

cleco style jumpers

I just recieved a PIC eval board. I need to solder in jumpers. Not a big deal but I'm used to things called cleco's use...
0 comments posted 17yrs
posted by clutch
0 comments posted 17yrs posted by clutch

negative potential on floated metal skimmer

Hello all, I wanted to know if there will be an undesirable build up of charge if I place a negative potential on a flo...
0 comments posted 17yrs
posted by cesar.contreras.npp
0 comments posted 17yrs posted by cesar.contreras.npp

Which solder?

I tried Kester "245" No-clean solder but sometimes end up with the conductive white residue problem from the moisture t...
12 comments posted 17yrs
posted by jluers
12 comments posted 17yrs posted by jluers

basic opamp grounding question

Hello, If I have an OpAmp (a 741 for example) and I want to use it as a buffer, and will be sending it 2Vdc, and am pow...
19 comments posted 17yrs
posted by panfilero
19 comments posted 17yrs posted by panfilero

Measuring Resistance

I have a basic series-parallel circuit, it is power by my DC power supply. From the Neg to R1, then to the parallel gro...
4 comments posted 17yrs
posted by rhamm618
4 comments posted 17yrs posted by rhamm618

LED revision in Sanyo adap

LED takes on:- 1. max of 0.5 voltage 2. it requires a dc adaptor of 0.2 upto 8-9 volts for supply to be adjusted to the...
0 comments posted 17yrs
posted by jramacha
0 comments posted 17yrs posted by jramacha

LED

1) An LED is diode; right? So that it conducts in one direction only? 2) LEDs are normally operated by DC, from a DC su...
6 comments posted 17yrs
posted by tsanford
6 comments posted 17yrs posted by tsanford

PIC suggestions needed

I want to play with a PIC. Microchip has an inexpensive programmer. Is this a good item to start with? http://www.newar...
15 comments posted 17yrs
posted by clutch
15 comments posted 17yrs posted by clutch

LED lamp

is it possible to make an LED lamp with a 35v / 25mA supply? if so can anyone teach me?
4 comments posted 17yrs
posted by giteco
4 comments posted 17yrs posted by giteco