Design

120VAC PCB mount connectors
Hi, I am looking for a connector similar to this one http://ca.mouser.com/Search/Refine.aspx?Keyword=213598 but designed for right angle PCB mount instead. I think they are called nema 5-15 or nema 5-20 connectors There are IEC 320-C13 PCB mount ones (PC powersupply type) but I am looking for the stand... 11 Aug 2010 01:43

? on opamp I-to-V converter schematic
The schematic at the link below is from analog's AD1955 DAC reference schematic with IV stage using opamps. http://picasaweb.google.com/mahen.jnk/Temp#5503821712578968130 What is the purpose of R80 and R81 and also R60 and C42 in the feedback path? Appreciate if anyone explains their working and how to calcula... 11 Aug 2010 14:45

Which multi-PIC mid-range comms protocol?
Hi there, Used up all the good resources of a PIC16F886 to make a high resolution ADC (well, soon to be built, but gone through all the required PIC resource allocation), now I need to talk to another 16F886 (28pin) or 16F887 (40pin) PIC for RTC (32kHz watch xtal) and system control. The ADC chip already t... 12 Aug 2010 07:06

measuring fuel efficiency
Nowadays even economy cars (e.g.: 2010 Sentra) measure gas flow and whatever may be derived from it (mpg, average mpg, "distance to empty" etc). How do they do it? My (uneducated)guess is either of the following : 1. accurate level meter in the gas tank (accuracy may be affected by temperature and pressure - the ... 13 Aug 2010 16:52

Diode Array - anyone make them.....cheap?
I have been looking for a simple diode array that would be the equivalent of, say, (8) 1N914 switching diodes in a 16 pin package. Through hole or surface mount, and under a buck. I have found a couple that were in the $7.00US range and some crazy military spec things that were in the $70US range, but that's ... 12 Aug 2010 01:44

JOB: Client Needs SR. JAVA/J2EE DEVELOPER
Hello, Looking forward to submit your resume for the below mentioned Requirement..... Please send me Updated RESUME along with RATE, Contact Number and Availability..... Location: Woodcliff Lake, NJ 07677 Duration: 6+ Month Contract (This contract is on-going) Rate: Open Requirement: **Candidate mu... 10 Aug 2010 13:36

JOB: Client Needs Data Architect (New Brunswick, NJ08901)
Hello, Looking forward to submit your resume for the below mentioned Requirement..... Please send me Updated RESUME along with RATE, Contact Number and Availability..... Location: New Brunswick, NJ 08901 Duration: Long term Rate: Open Requirement: **Must have Pharma or major Food Industry Experienc... 10 Aug 2010 12:29

Determining the amperage of an unknown transformer
I have a toroidal power transformer that I'm considering using for a power supply project. It has two secondaries -- 18v-0-18v and 0-48v. Part number is 7-40-0011 (already tried googling it, no luck). I'm pretty sure I purchased it from one of the online surplus places, maybe All Electronics, probably about a decad... 12 Aug 2010 13:40

Arghhh
Why are the so called PCB design experts just mouse shakers? Why does this have to happen during my holidays? -- Thanks, Fred. ... 13 Aug 2010 19:04

Circuit design - incredibly self-indulgent class A headphone amp
For some years I've had a transformer, bridge rectifier, and large electrolytic caps from some sort of power supply rescued out of scientific garbage, because I couldn't bear to see it discarded, and I never really figured out what to do with a 30 V supply that could maybe do 1-2A judging by the size of the transfo... 9 Aug 2010 23:24