Hobby Electronics Basics

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78L05 used as 27 volt regulator?

I have an application that requires regulated 27VDC at 50mA or less. I used a walwart tranformer that delivers 35 volts...
4 comments posted 20yrs
posted by wrongaddress
4 comments posted 20yrs posted by wrongaddress

Sensor: Accelerometer vs Vibration

Hi, I try to distinguish between Accelerometer and Vibration Sensors. So take a look at Globalspec Vibration...
4 comments posted 20yrs
posted by quanghoc
4 comments posted 20yrs posted by quanghoc

Drive logic/motor power supply

Hiya, I was considering adding either a floppy and/or hard drive into a project I'm working on, and since either requir...
8 comments posted 20yrs
posted by fyberoptic
8 comments posted 20yrs posted by fyberoptic

Variable DC power supply

I'm planning on testing a house light dimmer switch to provide
4 comments posted 20yrs
posted by perilmung
4 comments posted 20yrs posted by perilmung

Conversion

How to convert decibel/decade to decibel/octave ?
20 comments posted 20yrs
posted by prashanthramu
20 comments posted 20yrs posted by prashanthramu

on on off off flasher unit?

I am looking to build a small unit which will power some 12v LEDs. I would like the unit to have two output with the fo...
10 comments posted 20yrs
posted by rob
10 comments posted 20yrs posted by rob

high pass RC ckt

wat ll be the output for high pass RC when a ramp input is given?
1 comments posted 20yrs
posted by chrajesh911
1 comments posted 20yrs posted by chrajesh911

Optical Sensor vs Optical Encoder

Are those two the same thing? http://www.mouser.com/catalog/627/1256.pdf
7 comments posted 20yrs
posted by quanghoc
7 comments posted 20yrs posted by quanghoc

why did it break

i took a 12v 300ma transformer (meant for a little submersible pump) and cut the wire and stripped it. then i used it a...
9 comments posted 20yrs
posted by randomname12345
9 comments posted 20yrs posted by randomname12345

Touch Panel

When I look at this: http://www.fcai.fujitsu.com/pdf/standard7_wire.pdf I don't know what exactly Haze & Transparency S...
1 comments posted 20yrs
posted by quanghoc
1 comments posted 20yrs posted by quanghoc

How Pixel works?

I have done my homework (doing research). And I still like to understand how to activate a pixel with a different color...
3 comments posted 20yrs
posted by quanghoc
3 comments posted 20yrs posted by quanghoc

FM transmitter does not work on breadboard

I have armed an FM transmitter on breadboard but for some reason it does not work. I have checked wiring and components...
6 comments posted 20yrs
posted by chriswilliams65
6 comments posted 20yrs posted by chriswilliams65

Could someone please explain this?

Hi, I'm writing a program that interfaces with a device on the serial port and in the documentation it says the folowin...
2 comments posted 20yrs
posted by mqiqcqhqaqeqlqhqiqmqsq
2 comments posted 20yrs posted by mqiqcqhqaqeqlqhqiqmqsq