⏚ Electrical Engineering

Re: Car alternator failure -- twice!

> decrease in DC output voltage. No, ONE a shorted diode would cause huge currents in the winding connected to that pha...

0 comments posted 11yrs

posted by jmelson

0 comments posted 11yrs posted by jmelson

Relaxation Oscillator as a perfect example of regenerative feedback

Relaxation Oscillator circuit is a perfect example of regenerative feedbac k that is special case of positive feedback....

0 comments posted 11yrs

posted by pchung705

0 comments posted 11yrs posted by pchung705

Connecting an IR sensor

Hi, I bought a IR sensor to connect a light in my wardrobe, but I am now struggling with the connections. Can anyone pl...

1 comments posted 11yrs

posted by alves.paulo

1 comments posted 11yrs posted by alves.paulo

is this a decent supplier?

I'm thinking of getting some components from this wholesaler. Their prices are quite good. Has anyone used them before?...

0 comments posted 11yrs

posted by invalid

0 comments posted 11yrs posted by invalid

DC-DC converters basic topologies online simulations

DC-DC converters are essential power supply circuits for modern electronic equipment today. Five basic topologies are r...

0 comments posted 11yrs

posted by pchung705

0 comments posted 11yrs posted by pchung705

Question about Whirlpool Washer Motor Part # 3951550

I have a used motor obtained from a local laundromat. I was hoping I could make a DC generator out of it. I really know...

12 comments posted 11yrs

posted by pauljdudley

12 comments posted 11yrs posted by pauljdudley

Differential Amplifier is an input stage of every op-amp

Generally, if input stage of an operational amplifier is realized as BJT tr ansistor differential amplifier, op-amp has...

0 comments posted 11yrs

posted by pchung705

0 comments posted 11yrs posted by pchung705

Op-amp voltage offset cancellation

Combination of one fast op-amp with large slew rate and large voltage offse t with one op-amp with small slew rate and...

0 comments posted 11yrs

posted by pchung705

0 comments posted 11yrs posted by pchung705

USB Memory Sticks And Speaker Magnetic Field Potential problem ?

Hello, Figured you folks would likely know: Any potential problems in keeping those USB Memory Sticks/Dongles relativel...

1 comments posted 11yrs

posted by rgsros

1 comments posted 11yrs posted by rgsros

Plug Fuse Type

Hello, all, and a fuse question for a practicing electrician (or anyone in the know): Assuming a residential branch cir...

14 comments posted 11yrs

posted by arl_123234

14 comments posted 11yrs posted by arl_123234

Current mirror

Current mirror is inevitable part of input stage of operational amplifiers. Current mirror behaves almost as perfect cu...

0 comments posted 11yrs

posted by pchung705

0 comments posted 11yrs posted by pchung705

Moving wall switch

I took out a 9 foot patio door and am installing a 6 foot French door. I need to move my light switch closer to the now...

5 comments posted 11yrs

posted by stryped1

5 comments posted 11yrs posted by stryped1

our table office is located behind a wall full of high vfd's 480 volts

Our new office desk and computer is located next to an electrical switchgear room full of 6 feet high VFD's at 480 volt...

0 comments posted 11yrs

posted by danyD

0 comments posted 11yrs posted by danyD

POTS Battery Grounding

Hello, everyone. Historically (at least in the U.S.), the positive terminal of the 48-volt battery stack at the central...

4 comments posted 11yrs

posted by arl_123234

4 comments posted 11yrs posted by arl_123234

DC to AC conversion question

Sorry if this is a trivial question, but I wish to convert my wife's rechar geable sweeper into an AC plug-in device. T...

3 comments posted 11yrs

posted by kjhodkin

3 comments posted 11yrs posted by kjhodkin