⏚ Electrical Engineering

Monostable circuit with ne555

ne555 monostable circuit is very easy to prepare. Now there is online simulation as well as corresponding tutorial. htt...

0 comments posted 13yrs

posted by pchung705

0 comments posted 13yrs posted by pchung705

Canon MP970 disassembly?

Need to get to the ink pump (head-cleaning pump). How do I get the main plastic casting (what you see when you open the...

0 comments posted 13yrs

posted by invalid

0 comments posted 13yrs posted by invalid

Re: Seeking information on the Basicon MC-1N (INS8073 based)

Hi Ed, I have this Basicon MC-1N in mint condition and an EEPROM board that plugs into it and 2 parallel I/O boards tha...

0 comments posted 13yrs

posted by 0f8503901d844703eea1acecb7a4938a_1510

0 comments posted 13yrs posted by 0f8503901d844703eea1acecb7a4938a_1510

[Tempting offer] New product idea

Hello. Friends. I'm a electric engineer of Semiconductor and want to share with you about m y new idea using a smart de...

6 comments posted 13yrs

posted by joeyleeby

6 comments posted 13yrs posted by joeyleeby

AT&T model 1725 digital answering service- can be remotely powered on

I personally witnessed this machine powere on by an incoming phone call when the unit was plugged in but powered off. Th...

0 comments posted 13yrs

posted by mothman20052002

0 comments posted 13yrs posted by mothman20052002

Phasor and time-domain waveforms online

Phasor representatives of steady state AC signals are very practical for calculating both amplitude and phase of AC sig...

0 comments posted 13yrs

posted by pchung705

0 comments posted 13yrs posted by pchung705

ARC fault breakers

I know they are now code for most rooms in a house. Is it a good idea to replace the "regular" circuit breakers in my h...

7 comments posted 13yrs

posted by stryped1

7 comments posted 13yrs posted by stryped1

Wall oven junction box

I am replacing my wife's wall oven with the same size oven. (24 inch). The old oven has been there for at least 12 year...

15 comments posted 13yrs

posted by stryped1

15 comments posted 13yrs posted by stryped1

Mains wiring question: Sizing buck-boost transformer?

In USA. Source: 208v, 60 hz, 2-wire (2 phases from 3 phase "Y" supply). Load: 240v, 20A. I presumed that sizing a buck-...

9 comments posted 13yrs

posted by gwprez

9 comments posted 13yrs posted by gwprez

Pool Heater Nuisance Tripping

I have a pool water tankless instant heater that has two elements, each fed by a 220v 40amp double breaker. When I meas...

15 comments posted 13yrs

posted by streetsj.no.spam

15 comments posted 13yrs posted by streetsj.no.spam

Electrical outlet question

I need to add a gfi outlet to my wifes bathroom. I want to add it to the cu rrent light switch box. This box currently...

5 comments posted 13yrs

posted by stryped1

5 comments posted 13yrs posted by stryped1

How to replace LMG7420 (Toshiba T6963c) with LMG7420 (RA6963L2NA )

i have a machine working with LMG7420PLFC-X (Toshiba T6963C) when this LCD become faulty , i bought another one but unf...

1 comments posted 13yrs

posted by Remon

1 comments posted 13yrs posted by Remon

A new way to display your Excel calculations

Hi, I would like to share with you a new handy Excel add-in that transforms for mulas into easy-to-read graphical image...

0 comments posted 13yrs

posted by jmari0818

0 comments posted 13yrs posted by jmari0818

Ground?

This is a segment of a schematic of a Yamaha receiver: http://www.tinyuploads.com/images/8LzeOF.jpg My question is abou...

3 comments posted 13yrs

posted by invalid

3 comments posted 13yrs posted by invalid

Lilfe in the slow (repair) lane.

I need a rant... Is hardware becoming more complicated, users becoming more clueless, or both. I get a panic call from...

18 comments posted 13yrs

posted by jeffl

18 comments posted 13yrs posted by jeffl