Hobby Electronics Basics

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Driver for IGBT? (-ve off and +ve on from CMOS)

I would like to drive an IGBT from a microcontroller (CMOS). Is there a driver circuit that can outputs around +15v (on...
80 comments posted 21yrs
posted by boxster
80 comments posted 21yrs posted by boxster

looking for a SIMPLE halloween scarer circuit?

hi, Hope you don't mind a total newbie butting in. I'm planning a moderate sized halloween party for friends and family...
8 comments posted 21yrs
posted by plittle1970
8 comments posted 21yrs posted by plittle1970

Motor comtrol

Hi I am a supply teacher with a limited knowledge of electronics and have been given a class at short notice. I have a...
11 comments posted 21yrs
posted by robert.tracey
11 comments posted 21yrs posted by robert.tracey

Intel P3 vs TI DSP C55 (MPEG)

Hi all, I am learning MPEG2 encoder. Now I test my C code on Intel P3 600MHz, it take about 0.08s time to encode a fram...
0 comments posted 21yrs
posted by zhushenli
0 comments posted 21yrs posted by zhushenli

How many layers in a multi layer board?

What are the typical methods for determining how many layers a PCB board is. Like after you take something apart and se...
11 comments posted 21yrs
posted by rspinks1
11 comments posted 21yrs posted by rspinks1

PIC 12F6xx or 16Fxxx Programmer

looking for PIC 12F6xx or 16Fxxx Programmer schematic to build... anyone have one available to download or know of a web...
4 comments posted 21yrs
posted by rigor
4 comments posted 21yrs posted by rigor

Accuracy of radio/GPS-like system?

How accurate could something like this be: Three antennae on ten foot towers are set up about 100 yards apart. A handhe...
26 comments posted 21yrs
posted by noreplies
26 comments posted 21yrs posted by noreplies

SPST Lighted Rocker Switch is not Lighting Up

I just bought the following SPST lighted rocker switch from RadioShack but I can't get it to light up: http://www.radio...
4 comments posted 21yrs
posted by eddie
4 comments posted 21yrs posted by eddie

ac curent detector

I'm just wondering if the LM1458 of ac current detector from Bowden's Hobby Circuit doesn't need any supply at all. Sin...
4 comments posted 21yrs
posted by mrgbondoc
4 comments posted 21yrs posted by mrgbondoc

TI DSP's Q float system

Hi all, I am new to TI DSP. And I am using 320C55X series. I found their float system use something like Q13.3, 13 bits...
4 comments posted 21yrs
posted by zhushenli
4 comments posted 21yrs posted by zhushenli

Two ways to fry a component

Many components I have seen have 2 ratings on them: volts and amps. I am guessing that they put these two ratings on th...
4 comments posted 21yrs
posted by jamie
4 comments posted 21yrs posted by jamie

Voltage ratings on components

I have a question about the meaning of voltage ratings on electronic components. Does the voltage rating mean it is the...
4 comments posted 21yrs
posted by jamie
4 comments posted 21yrs posted by jamie

ULN2803 current limit

ULN2803A: The datasheet says the 500 mA limit applies to "one device in the package". Does that really mean that the wh...
4 comments posted 21yrs
posted by source
4 comments posted 21yrs posted by source

Voltage to Sound Help

Hi All I have created an Ultrasonic TX and RX. Now I would like to convert the output to an audible sound. When an obje...
7 comments posted 21yrs
posted by res196k8
7 comments posted 21yrs posted by res196k8

Identifying The Pins

I bought a SCR from Mouser that didn't have any pin-out. Are all SCRs the same in terms of where the gate and the other...
11 comments posted 21yrs
posted by ryon
11 comments posted 21yrs posted by ryon