Hobby Electronics Basics

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When we listen to the radio ?

I would greatly appreciate if someone can explain to me the need to angle the radio antenna at 45 degree for FM and 90 d...
5 comments posted 15yrs
posted by mowhoong
5 comments posted 15yrs posted by mowhoong

Type of resistence

Hi This resistence, R26 and R27: http://www.123rf.com/photo_552275_simbol-on-electronic-board-close-up-selective-focus-o...
48 comments posted 15yrs
posted by nospam
48 comments posted 15yrs posted by nospam

Question about all electronic auto instrument

I've got a junked Ford auto instrument panel. It has 6 actuators for the tach, speed, fuel, etc. Identical 1" X 1-1/8"...
15 comments posted 15yrs
posted by default
15 comments posted 15yrs posted by default

Convert half-wave rectified to AC?

Gentlemen: I'm an ME, not a EE so be gentle with me. I have a half-wave rectified signal (half of 120 Vac passed throug...
40 comments posted 15yrs
posted by eromlignod
40 comments posted 15yrs posted by eromlignod

MC34063 Step-down Converter Heating Problem

Hi, I have constructed a DC-DC step-down converter using the MC34063. The circuit I use is very similar to the one show...
10 comments posted 15yrs
posted by anand.paralkar
10 comments posted 15yrs posted by anand.paralkar

DVR standalone

does anyone still make a DVR standalone.....recorder without the monthly charge thanks
10 comments posted 15yrs
posted by buddy116
10 comments posted 15yrs posted by buddy116

something to diffuse led light?

Anyone have a good idea for something around the house I could use? I converted an automotive-like lamp to use 4 leds....
11 comments posted 15yrs
posted by nospam
11 comments posted 15yrs posted by nospam

simple npn question

Hi, I'm stuck on a really simple problem here: I need to drive high-side line driver (ir2104) control pin with a 5V sig...
8 comments posted 15yrs
posted by tkdoublee
8 comments posted 15yrs posted by tkdoublee

Soldering near a filled plane

Gentlemen: I recently ordered a PC board from Express PCB and, to save money, I got their economy-type board that has n...
10 comments posted 15yrs
posted by eromlignod
10 comments posted 15yrs posted by eromlignod

x1 'scope probes

A times one (x1) =91scope probe has a capacitance of about 90 to 100 pF. Say I=92m looking at a signal with a source im...
10 comments posted 15yrs
posted by gherold
10 comments posted 15yrs posted by gherold

pulse oximetry (blood oxygen) sensors

I was wondering if anyone has done any experimenting with these. I was curious about how they work. I don't think it wo...
4 comments posted 15yrs
posted by jimidotorg
4 comments posted 15yrs posted by jimidotorg

remote doorbell (buzzer)

A doorbell when access to push button wires not practical and placed where primary doorbell can't be heard. bottom of pa...
18 comments posted 15yrs
posted by 2assume
18 comments posted 15yrs posted by 2assume

IDT82P2521

Hello All I need the BSDL file of this device or some information about its Boundary Cells to write it myself can anybod...
0 comments posted 15yrs
posted by maryam11.18
0 comments posted 15yrs posted by maryam11.18

Kicking The Bucket The Hard Way--

I want to make a chorus unit for my electric guitar and I need a Panasonic MN3007 IC but the one place that I found tha...
26 comments posted 15yrs
posted by ryon
26 comments posted 15yrs posted by ryon

ELECTRNICS PROJECT

Can anyone help me in my final year electronics project
9 comments posted 15yrs
posted by nandakumarrr
9 comments posted 15yrs posted by nandakumarrr