⏚ Electrical Engineering

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Electronic component suppliers

This Virtual Electronics Club Is Established To Build A Unique Electronics Culture Among Their Members Through Enhancin...
0 comments posted 10yrs
posted by ahlam.vec
0 comments posted 10yrs posted by ahlam.vec

What's wrong with this picture?

http://tabesh.edu.af/wp-content/uploads/2016/04/announcement-speakers-and-people.jpg Neal McLain
5 comments posted 10yrs
posted by nmclain
5 comments posted 10yrs posted by nmclain

Weird piezo driver

http://imgur.com/Trvs5mk This is a beeper piezo in a Fluke 117 DMM which quite beeping. Scoped the piezo?s pads and......
6 comments posted 10yrs
posted by not
6 comments posted 10yrs posted by not

House-sitting for millenials

?How do I turn off the bathroom light?? https://pbs.twimg.com/media/CbXWbQ-W8AAwSA8.jpg
5 comments posted 10yrs
posted by not
5 comments posted 10yrs posted by not

repair APC Smart-UPS: any dangers lurking inside?

Moin My trusty old APC Smart-UPS SU-1500 is still working fine generally, only that the C13/C14 output jacks in the bac...
1 comments posted 10yrs
posted by mathias
1 comments posted 10yrs posted by mathias

Wall warts

I'm a mechanical guy with a bunch of wall warts. They ranged in votage from 3 VDC to 5 VDC. Question is How can I conne...
1 comments posted 10yrs
posted by rwwink
1 comments posted 10yrs posted by rwwink

Help with SMB BJT identification?

3-terminal (well 4, including the tab) SOT-89/TO-243 (4.5 x 2.5 mm) package. Marked: 2108A 2216/36 Thanks.
3 comments posted 10yrs
posted by not
3 comments posted 10yrs posted by not

Replacement LED?

The LED in my flashlight is blinking (2/sec). It?s not the support circuitry (constant current): the voltage across the...
33 comments posted 10yrs
posted by not
33 comments posted 10yrs posted by not

Design for Test Questions : Probing a Test point

What are the pros and cons between probing directly at a via and probing a dedicated test pin? How does the design for...
1 comments posted 10yrs
posted by mr.jay.diem
1 comments posted 10yrs posted by mr.jay.diem

Greasing up switches and connectors?

Cleaning up an old rotary mode switch used for 5v logic levels. It has some kind of grease in it. ?which has always con...
3 comments posted 10yrs
posted by not
3 comments posted 10yrs posted by not

3 pin relays seem useless, am I right ?

Since the input +ve voltage will be shared by controller * circuit & output pin, then input has enough ampere to satisf...
5 comments posted 10yrs
posted by pbx5619
5 comments posted 10yrs posted by pbx5619