Hi all, I am working on a project for designing a heart rate monitor using an analog input and a digital output. can somebody please tell me that in a addition...
Hi, I'm new to this group and it's pretty obvious Im over my head.But I do love electronics, I have 10 years experience in manufacturing of P.C. Boards in 1...
Hi I need a 22MHz crystal oscillator desperately. This is for my final year project which is due in a couple of weeks. It is an 802.11 2.4GHz transmitter- ...
... From: "Jeffrey Hinds" <jeff@...> ... transmitter- ... of ... ASAP ... Do you already have a 22MHz crystal & want an oscillator circuit, or are you...
HI! just joined. Started in electroic field in early 80. Graduated from an electronic school and currently in telecommunications. I haven't been active in the...
Hello all: I am new to this group, and have dabbled in electronics off and on for years. Now that I am retired, I have more time to get serious about my...
Hi all. I am new to this group and fairly new to electronics. I was hoping someone may be able to help me with a UHF transmitter and receiver. All I really...
Circuit Cellar magazine http://www.circuitcellar.com/ has an advertising section that lists companies that sell stuff for micro I/O interfacing. Quite a few...
Howdy all- I'm doing some archive work and I am attempting to install an old version of Logical Devices CUPL Total Designer/WIN V4.7A... would/could anyone who...
I have several large transformers taken out of UPS's. There are no indications as to output voltage or amperage. Are there any clues to let me know? I've...
I have a rectangularish signal that is on for 1 microsecond and this event occurs every millisecond (1 kHz). I have to switch many of these signals into a...
Hi guys. For a university project I am building a system based on 802.11b WLAN. Im using the Maxim MAX2820 chipset. My question is the following: the RF...
I am working on a data acquisition system to acquire data from a gamma detector(NaI)using avr atmega128L microcontroller. it is to be used as an multichannel...
jalakang, Here is a simple water activated alarm that you can possibly build yourself. http://www.zen22142.zen.co.uk/Circuits/Alarm/walarm.htm I have read that...
Kindly note that I am an amateur have not any knowledge about electronics. I have problem in my house. I need to detect water level because water always come...
the name's Philip and i'm over in toronto, ontario, canada. i tinker with electronics and have built a couple things from books, of course, expanded and...
Hello those out there? My Takada Air cooler model sy-07a just went defective. Initially it was just the water pump that cause the 1A fuse to blow. I could find...
Greetings all, Hope someone can lend a hand...I have a 12 volt DC motor .9amp this runs from 110v household current to a switching power supply 110-12v dc 3.25...
wow just bought a recharger for 40 bucks and recharger 2 packs of nickel metal hydride batteries for my handheld tv, wow took like 16 hr to charge. use the...
I have just joined this forum and I want ideas/techniques for modyfing my old Tektronix 491 SA to give me a centre frequency readout. I have purchased a kit...
I am looking for someone who knows how to modify a wavecomm jr into a scanner that scans 2.3ghz to 2.7ghz. If no one knows how to I am willing to purchase one...
I have decided to use a, "4017B Decade Counter" to get up to a 300 second delay. I will use a 556 and hook up the first half as an astable cycling high and low...
I am going to be using an op amp to potentially amplify a pretty small signal. I want to use something better then a 741. I am looking through this book of op...
Hello, I am new to this group. I am rusty with this stuff which doesn't help matters. Anyway, I'm trying to make a timer that will have a change of output...
... Yes indeed, a tantalum would be better. But getting 5 minutes from a simple 555 is a big ask. Normally people use a faster running oscillator & divide the...
... What op amp you should use for minimum noise depends on what circuit you are using. And what circuit you should use depends on the impedance of your signal...
