Search found 1788 matches

by Externet
Tue Oct 22, 2019 8:13 am
Forum: General Discussion
Topic: Interesting assembly method...
Replies: 5
Views: 221

Re: Interesting assembly method...

Nice link, haklesup. Did not see all ramifications in it, but nice. With no plans to stop repairing anything that gets to my hands, lawful or not. Was lucky, one phone I guessed the password sweeping a gesture on the keypad. But erased all previous contents anyway, and left without password. 3 other...
by Externet
Sat Oct 19, 2019 2:36 pm
Forum: General Discussion
Topic: Interesting assembly method...
Replies: 5
Views: 221

Interesting assembly method...

Dismantled some cell phones to learn and enjoy the way they are built lately, and found their lithium cell attached to the case with the method those 'Command' wall fasteners use. Two removable adhesive strips that come out by pulling. Very hidden next to the cell, pulling tabs releases it. :shock: ...
by Externet
Fri Sep 27, 2019 8:19 am
Forum: General Discussion
Topic: Self entertaining, entertainment system!
Replies: 29
Views: 3217

Re: Self entertaining, entertainment system!

Westinghouse.
by Externet
Thu Sep 26, 2019 8:10 am
Forum: General Discussion
Topic: Self entertaining, entertainment system!
Replies: 29
Views: 3217

Re: Self entertaining, entertainment system!

Hi.
I mentioned the cell phone not only with its possible interaction with the television, but confirmed misbehavior with a TV remote control sleeping on the same table as the phone. :shock:
by Externet
Sun Sep 22, 2019 12:01 pm
Forum: General Discussion
Topic: Self entertaining, entertainment system!
Replies: 29
Views: 3217

Re: Self entertaining, entertainment system!

Hi Len.
For your peace of mind, watch if your misbehaving equipment is or is not nearby any cell phone. They report to their tower often, unattended, emitting interfering signals. Confirm if all phones are on or off when weird things happen to eliminate or suspect interactions... :shock:
by Externet
Sun Aug 18, 2019 1:44 pm
Forum: Up For Grabs
Topic: Wanted: Ramsey receiver AR2 kit or assembled...
Replies: 1
Views: 379

Wanted: Ramsey receiver AR2 kit or assembled...

Hi all.
If there is one of those AR2 receivers behind the spider webs, please let me know.
by Externet
Wed Aug 07, 2019 11:18 am
Forum: General Discussion
Topic: I can't think today.. help !
Replies: 10
Views: 2894

Re: I can't think today.. help !

Hi. It could be better approached as three window comparator circuits. One between 4.9 and 5.1 V to turn on led '5V' ; One between 8.8 and 9.2 V to turn on led '9V' ; One between 11.7 and 12.3 V to turn on led '12v' ; or with the tolerances of your preference. If that fits your wishes... Perhaps a L...
by Externet
Sat Jul 06, 2019 12:15 pm
Forum: General Discussion
Topic: Need 36v charger or PS.
Replies: 6
Views: 2007

Re: Need 36v charger or PS.

Hi. 36V usually charges at 42V; times 8A is a sustantial ~400Watt capable charger with few target products. A few this site sells: ----> https://www.aliexpress.com/item/32742206305.html?spm=2114.search0104.3.179.7aa94d31ZCSWuB&ws_ab_test=searchweb0_0%2Csearchweb201602_8_10065_10130_10068_10547_319_1...
by Externet
Mon Jun 17, 2019 3:38 pm
Forum: General Discussion
Topic: Powder coating power supply
Replies: 9
Views: 2143

Re: Powder coating power supply

Use a CRT high voltage flyback transformer sawed-off section from a defunct TV/monitor PCB ? You want DC.
Older copy machines have a high voltage module, very canibalizable. I have one at 7KV if suits you for $0.
by Externet
Wed Jun 12, 2019 8:10 am
Forum: General Discussion
Topic: Advice on power bank voltages/power
Replies: 7
Views: 5091

Re: Advice on power bank voltages/power

There is also another factor while testing/evaluating the energy delivered by batteries, usually not published; or they come up with it when there is a complain : Test duty cycle.
Manufacturer may want 5 minutes drain, 10 minutes rest and repeat; or whatever they decide.
by Externet
Mon Apr 15, 2019 12:16 pm
Forum: General Discussion
Topic: What kind of dye is this?
Replies: 5
Views: 1864

Re: What kind of dye is this?

What do you mean by "polish"... ? A wax, a polishing compound, a buffing compound ? Perhaps peek at the MSDS of the product you are curious about; may have clues on pigments. Here is one----> https://www.thetreatment.com/product/the-color-treatment-color-enhanced-liquid-car-wax-16oz/?doing_wp_cron=1...
by Externet
Wed Apr 03, 2019 5:18 pm
Forum: General Discussion
Topic: Diode forward/reverse resistance measurement
Replies: 8
Views: 3422

Re: Diode forward/reverse resistance measurement

[ Thread is from 2013 ]
by Externet
Tue Apr 02, 2019 8:22 am
Forum: General Discussion
Topic: Odd Commercial Products.........
Replies: 95
Views: 13718

Re: Odd Commercial Products.........

Gas powered lights had their era; unlikely to return...
MineLighting-245x300.jpg
MineLighting-245x300.jpg (15.23 KiB) Viewed 1957 times
by Externet
Mon Mar 11, 2019 4:36 pm
Forum: General Discussion
Topic: Any integrated circuit that works as the old tone decoder but for RF ?
Replies: 7
Views: 2131

Re: Any integrated circuit that works as the old tone decoder but for RF ?

Thanks, haklesup. Yes, bought broadcast FM receiver kits that use a TA2003 receiver chip, modified for 118 - 138MHz Rx and are working very well, (with distorted audio from FM demodulation that I do not care). Ordered AD8307 chips to experiment if those detect 10.7MHz at the chip IF node hopefully t...