Search found 1781 matches

by Externet
Sat Jul 06, 2019 12:15 pm
Forum: General Discussion
Topic: Need 36v charger or PS.
Replies: 4
Views: 168

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: 8
Views: 826

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: 838

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: 817

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: 2318

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: 90
Views: 8950

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

Gas powered lights had their era; unlikely to return...
MineLighting-245x300.jpg
MineLighting-245x300.jpg (15.23 KiB) Viewed 1261 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: 926

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...
by Externet
Sun Mar 10, 2019 7:38 pm
Forum: General Discussion
Topic: Antenna Cable Routing.........
Replies: 9
Views: 1105

Re: Antenna Cable Routing.........

Hi Tzap. I would test first for signal sufficiency and insert a preamplifier only if weak, at a point before signal gets distributed and passes so many connectors. That would be LNB output. Perhaps the diplexers/switch/splitter could be modified disconnecting their (choked) power path/feed ports goi...
by Externet
Sun Mar 10, 2019 12:38 pm
Forum: General Discussion
Topic: Any integrated circuit that works as the old tone decoder but for RF ?
Replies: 7
Views: 926

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

Hi.
Do you know of an IC like the NE567 audio tone decoder (detector) but for RF ?
Looking to detect the presence of 11MHz or 130MHz, turning a LED on.
by Externet
Sun Mar 10, 2019 10:41 am
Forum: General Discussion
Topic: Antenna Cable Routing.........
Replies: 9
Views: 1105

Re: Antenna Cable Routing.........

Hi.
Consider if your satellite receivers DC fed on coaxial to the dish LNB do not interact improperly with the path trough/into several devices.
by Externet
Sun Mar 10, 2019 10:27 am
Forum: General Discussion
Topic: Impending Forum Milestone
Replies: 7
Views: 1088

Re: Impending Forum Milestone

Yes, congratulations for Dacflyer !
It has been many years; from the days of Chris and 'pulling rice'.

The earliest group that I remember originated middle nineties at a Microsoft forum, then migrated to a Popular Electronics forum, then to Electronics Now before Nuts&Volts -if I have it right-
by Externet
Sat Mar 02, 2019 4:35 pm
Forum: General Discussion
Topic: Technology Backfire?
Replies: 38
Views: 2967

Re: Technology Backfire?

Very right, CeaSaR.
The product of the non-stop-growth of laziness. Easier to massage a keyboard expecting a solution than doing real diagnostics. Too much work to unscrew spark plugs!. And not returning the replaced 'bad' parts to the owner. Easier and nearer is the garbage can.
by Externet
Fri Mar 01, 2019 6:49 am
Forum: General Discussion
Topic: Technology Backfire?
Replies: 38
Views: 2967

Re: Technology Backfire?

Hi Len. If Honda cannot, you can diagnose the drain yourself and sell the result to Honda plus bill for your time. :smile: Adding that battery switch will just give another weak point of failure and complexity besides the loss of memories you list for the compfusers. Probing current at each fuse hol...
by Externet
Thu Feb 28, 2019 6:25 pm
Forum: General Discussion
Topic: Technology Backfire?
Replies: 38
Views: 2967

Re: Technology Backfire?

Hi Len.
If the Honda service centre cannot find the current path discharging the battery, they are incompetents. I would attempt to return/exchange the car to the dealer; then they may put some effort on the problem.