Hobby Electronics Basics

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pt100 thermistor and analog input module

hi everyone, i am facing big problems using a pt100 thermistor. this device has 3 wires, two red and a blue one. The tw...
5 comments posted 18yrs
posted by VASILI3000
5 comments posted 18yrs posted by VASILI3000

Type K Thermocouple probe question

Hello, I receive a what I thin k is a Thermocouple probe with my clampmeter I am not 100% sure how to connect it, I pos...
11 comments posted 18yrs
posted by lerameur
11 comments posted 18yrs posted by lerameur

pwm solenoid

i want to know is there any method to check the pwm solenoid and is there any posibility to make pwm signal to get varia...
0 comments posted 18yrs
posted by rajtripuraneni
0 comments posted 18yrs posted by rajtripuraneni

Weatherproof Outdoor TV

Family Entertainment has fewer boundaries now than ever before.Pantel Outdoor Television has made it possible with inno...
1 comments posted 18yrs
posted by kevin.grivers
1 comments posted 18yrs posted by kevin.grivers

How to hook up a Frequency Counter

Hey everyone! I have this machine that *should* be switching on and off at a frequency of about 110-120HZ. It is powere...
2 comments posted 18yrs
posted by kmvgroups
2 comments posted 18yrs posted by kmvgroups

Laptop power supply for battery charger

I have a 19 volt 3.5 amp laptop power supply that I want to use for equalizing lead acid batteries (car batteries and 7...
2 comments posted 18yrs
posted by mrpace
2 comments posted 18yrs posted by mrpace

LPT port relay

I am trying to use LPT port to control a small 5 V relay (Meisei ps-5). The relay appears to have 1.75 ohm resistance....
5 comments posted 18yrs
posted by test
5 comments posted 18yrs posted by test

Multiple Input Pull-down

I'm having a bit of a quandary. Since I'm still somewhat of a beginner, I hope somebody more experienced can help me ou...
4 comments posted 18yrs
posted by fyberoptic
4 comments posted 18yrs posted by fyberoptic

Piezo ignitor pulse shape

1) I am wondering whether the piezo ignitor of a BBQ lighter generates a single spark or multiple sparks. 2) In other w...
13 comments posted 18yrs
posted by aspoor
13 comments posted 18yrs posted by aspoor

problem with grounds

Hello I posted a simple circuit up on http://www3.sympatico.ca/captoro/motor/design1.gif I am having difficulty seperat...
43 comments posted 18yrs
posted by lerameur
43 comments posted 18yrs posted by lerameur

1N5817 schottky

Hello, I'm about to make a wideband rf sniffer using an op amp and a simple detector front end feeding a capacitor and...
8 comments posted 18yrs
posted by John
8 comments posted 18yrs posted by John

Converting from 30V to 5V or less

I'm using a computer to gather data using LPT1 port. The input pins of the lpt accept 0-5V. I want to know when three u...
18 comments posted 18yrs
posted by spam_filter
18 comments posted 18yrs posted by spam_filter

Open Instrumentation Project: Newsletter 8

This is Newsletter #8 of the Open Instrumentation Project. The OIP makes open-source software and economical high-techn...
6 comments posted 18yrs
posted by Peter.Hiscocks
6 comments posted 18yrs posted by Peter.Hiscocks