General Electronics

70VAC transformers

Hi all, Does anyone know a manufacture of a 70-0-70VAC transformer ? All the ones listed in Farnell are 55-0-55 tops, C...

5 comments posted 20yrs

posted by exxos

5 comments posted 20yrs posted by exxos

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...

11 comments posted 20yrs

posted by res196k8

11 comments posted 20yrs posted by res196k8

RFID Technology

Anyone with Knowledge please share

3 comments posted 20yrs

posted by anthony.westmoreland

3 comments posted 20yrs posted by anthony.westmoreland

looking for some direction on a project

I am a electronics student and designing a project. I am trying t design a handheld drag racing starting tree. I have t...

1 comments posted 20yrs

posted by bbcmalibu

1 comments posted 20yrs posted by bbcmalibu

Some interesting notes

Hello, Just look. The theorem of magnetic shells by Gauss predicts a uniform magnetic field across the diameter of a so...

7 comments posted 20yrs

posted by nimbo

7 comments posted 20yrs posted by nimbo

Careers in musical electronics

I'm studying an MEng Electronic Engineering degree at the University of Warwick in the UK and outside of electronics my...

2 comments posted 20yrs

posted by pot_stop

2 comments posted 20yrs posted by pot_stop

Inverter Amplifier Circuit

The Inverter CMOS linear amplifier in Figure 3.64 on page 158 in the book the art of electronics. The schematic seem to...

25 comments posted 20yrs

posted by diespammerdie

25 comments posted 20yrs posted by diespammerdie

chipsource = crooks ?

Hello did anybody encounter problems with Chipsource ? I've purchased components which were almost all defective (98% o...

3 comments posted 20yrs

posted by nospam

3 comments posted 20yrs posted by nospam

building a transmitter

Hello iam wondering if anyone knows how to build a long range f telephone bug that will transmitt on the fm frequencys...

37 comments posted 20yrs

posted by brandondraz

37 comments posted 20yrs posted by brandondraz

Multiple USB port controller chip

Hi, I wanted to know if there is any controller chip for controlling upto 4 USB ports,It will be great if any one of yo...

2 comments posted 20yrs

posted by mailsatishv

2 comments posted 20yrs posted by mailsatishv

Thermal pads on PCBs

I have an audio amp in a 20-pin DIP, and pins 11-20 are all grounded; the datasheet says to hook them to a large area o...

7 comments posted 20yrs

posted by postmaster

7 comments posted 20yrs posted by postmaster

is this a good value for a variable dc power supply? tia sal

Greets All, I'm doing some electrolysis testing and was wondering if these power supplies will do the trick http://www....

1 comments posted 20yrs

posted by <sal

1 comments posted 20yrs posted by <sal

How to "create" high load?

Greetings to all, First of all, I hope I'm on topic on this group. I would need a machine similar to this: http://www.c...

19 comments posted 20yrs

posted by nickname

19 comments posted 20yrs posted by nickname

Help! - Symbol PDT3100 Diagrams

Does someone know how to buy/obtain diagrams of Symbol Pdt 3100 mainboards (both old switch board type and new switch c...

0 comments posted 20yrs

posted by tecnico

0 comments posted 20yrs posted by tecnico

FA: switch mode power supply single board

switch mode power supply single board 15 VDC 4amps http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7550900904 Rick Ga...

0 comments posted 20yrs

posted by rick_gaff

0 comments posted 20yrs posted by rick_gaff