MPS A06 Free

Started by Tom Biasi in sci.electronics.basics23 hours ago

https://www.fairchildsemi.com/datasheets/MP/MPSA06.pdf Contact me private.

https://www.fairchildsemi.com/datasheets/MP/MPSA06.pdf Contact me private.


Is iPhone a simple, naive electronic gadget or a data safe?

Started by Mr. Man-wai Chang in sci.electronics.basics4 days ago 5 replies

Don't governments have laws regulating bank safes? :) -- @~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!! / v \ ...

Don't governments have laws regulating bank safes? :) -- @~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!! / v \ Simplicity is Beauty! /( _ )\ May the Force and farces be with you! ^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3 ???! ???! ???! ???! ???! ???! ????? (CSSA): http://www.swd.gov.hk/tc/index/site_pubsvc/page


an answer for those fiddly little micro USB connectors

Started by default in sci.electronics.basics1 week ago

Awhile ago I complained about the USB micro connector that my tablet uses to charge, since it's a pain in the ass to align (at my age) and easy...

Awhile ago I complained about the USB micro connector that my tablet uses to charge, since it's a pain in the ass to align (at my age) and easy to destroy the tablet's jack. Well it seems there's a solution for it: Magnetic Type-C Micro USB Fast Charging Cable. They aren't cheap, $7 each from a US supplier on EBAY, $4 from China, but may just be the answer I was looking for. I got o...


Alternator Output Drops Above 45 C After 75 km

Started by Bret Cahill in sci.electronics.basics2 weeks ago 32 replies

After 50 - 75 km driving the ignition system starts to fail. Pull over and wait 2 minutes and then another 50 km is possible _without...

After 50 - 75 km driving the ignition system starts to fail. Pull over and wait 2 minutes and then another 50 km is possible _without lights_. It's hard to imagine anything cooling off in just 2 minutes. There must be some thresh hold where the rectifier or voltage regulator is really sensitive to even small changes in temps. Bret Cahill


Trends In Mechanical Design Influenced By Electronics

Started by Bret Cahill in sci.electronics.basics2 weeks ago

During the late 19th - 20th Centuries every inventor seemed to be looking for a clever dual purpose that might simplify things, reduce the number...

During the late 19th - 20th Centuries every inventor seemed to be looking for a clever dual purpose that might simplify things, reduce the number of parts and materials. Some were quite good, i.e., using the rim of the wheel as a braking surface. Today it's different. You aren't taken seriously unless every task has it's own dedicated component, i.e., disk brakes on bicycles w


FM transmitter Repair

Started by amdx in sci.electronics.basics2 weeks ago 10 replies

HI guys, I have attempted a repair on an FM transmitter. I replaced TR2,(shorted) VR1,(10.7 V output, VR1 is a SMD L78L09), and R4, it...

HI guys, I have attempted a repair on an FM transmitter. I replaced TR2,(shorted) VR1,(10.7 V output, VR1 is a SMD L78L09), and R4, it looked overheated, measured OK. I fired it up and then found the output Mosfet (F1)shorted and VR1 with an output of 11.2V. So I replaced the Mosfet and the L78L09. The unit works, output is good. However, the 9 volt regulator again has 11.2 v o...


cutting metal

Started by RichD in sci.electronics.basics3 weeks ago 31 replies

Doing a home project, I need to cut some aluminum. It's a strip 1/20" thick, 2" wide. I have to cut it in two, that is, a straight 2"...

Doing a home project, I need to cut some aluminum. It's a strip 1/20" thick, 2" wide. I have to cut it in two, that is, a straight 2" cut. Should I seek a specialized handsaw for this job? Or a bolt cutter, or some such. Suggestions? I have minimal metal shop experience, but figure in a group of engineers, there ought to be a few metal benders - -- Rich


OT: Test, Ignore

Started by Bill Bowden in sci.electronics.basics3 weeks ago 17 replies

Test

Test


Cell phone electrocution

Started by Anonymous in sci.electronics.basics3 weeks ago 40 replies

Apparently she reached for her phone while she was in the bath, and it was charging... but still......

Apparently she reached for her phone while she was in the bath, and it was charging... but still... ?! http://www.foxnews.com/tech/2017/07/11/teen-dies-from-using-cellphone-while-taking-bath.html


Power factor for rectifier/capacitor input

Started by bob prohaska in sci.electronics.basics3 weeks ago 7 replies

Power supplies that take AC line power, rectify it to DC and then use a DC-DC converter to generate whatever output is desired seem fairly...

Power supplies that take AC line power, rectify it to DC and then use a DC-DC converter to generate whatever output is desired seem fairly common. Those that I've dissected don't seem to have any inductors between the caps and the AC line. What's the power factor in such a setup? It's clearly not zero, because some power gets to the load, but all the AC line sees is a pure reactance, unles...


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