Hobby Electronics Basics

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sound card voltages

I was just wondering what the typical voltages input to a sound card are. I want to try to view some signals on my sound...
4 comments posted 19yrs
posted by bob
4 comments posted 19yrs posted by bob

Fuse for an AC motor

I have these 110VAC single phase small AC motors which are driving a bunch of gears and other parts. Every now and then...
30 comments posted 19yrs
posted by uriahsky
30 comments posted 19yrs posted by uriahsky

cooling fan

Hello, I have a module which requires a heatsink. I want to add a fan about 3 inches away. My dilmena is this. Should I...
7 comments posted 19yrs
posted by lerameur
7 comments posted 19yrs posted by lerameur

DAC from PWM

Hello All, I need a simple DAC from a PWM on a PIC. What is the name of the circuit I need to search for? Thanks, John
1 comments posted 19yrs
posted by jecottrell65
1 comments posted 19yrs posted by jecottrell65

PicKit2 Clone Programmer by Sure Electronics

I was shopping on eBay for a PIC Programmer for hobby use. I saw one by Sure Electronics in Nanjing. It's a clone of Mi...
1 comments posted 19yrs
posted by ko6no
1 comments posted 19yrs posted by ko6no

Isolation

Hello, I am building a robot and wanted to have isaltion between the microcontroller and the motor. So Iknow have two b...
3 comments posted 19yrs
posted by lerameur
3 comments posted 19yrs posted by lerameur

Touch switch

Hey all, I need some advice on a basic touch-switch. I'm hoping to make a "Dance mat" for a computer game I play: This...
8 comments posted 19yrs
posted by N.sherlock
8 comments posted 19yrs posted by N.sherlock

Source of piezo

I want to play around a little with the effects of piezo electric crystals but I'm weary of tearing up my clock's to ge...
6 comments posted 19yrs
posted by Jon_Slaughter
6 comments posted 19yrs posted by Jon_Slaughter

Reducing 18 volt DC to 12 volt DC

I have a cargo trailer that the lights work only when the parking lights are onin my truck. This is problematic seeing...
12 comments posted 19yrs
posted by georgevans
12 comments posted 19yrs posted by georgevans

Tektronix TDS-210 Broke; Any ideas?

Hi all, I've got a Tek TDS-210 DSO that gave up on me last Sunday. I bought it on eBay for ~$700 2.5 years ago and it's...
16 comments posted 19yrs
posted by jason
16 comments posted 19yrs posted by jason

Another Negative Ion Generator Question

I would like to know about the rules for what will impede negative ion flow (Ion wind) on the output of a negative ion...
4 comments posted 19yrs
posted by technician
4 comments posted 19yrs posted by technician

Understanding of ltspice models

Some people here kindly helped with a silly question. I have perhaps another. Trying to understand spice models to make...
1 comments posted 19yrs
posted by pierre_juno
1 comments posted 19yrs posted by pierre_juno

Is a microcontroller best for this?

Greetings All, I want to build a stepper driven pointer. US Digital sells a chip that uses the signals from an encoder...
7 comments posted 19yrs
posted by etpm
7 comments posted 19yrs posted by etpm

A capacitor connected to a Voltage Divider

Hi all What would happen if you connect 2 resistors together in series and then connected a capacitor also in series (s...
4 comments posted 19yrs
posted by shelton.dcruz
4 comments posted 19yrs posted by shelton.dcruz