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| From | "Don" <g@crcomp.net> |
|---|---|
| Newsgroups | sci.electronics.design |
| Subject | Re: silly circuit |
| Date | 2026-04-08 15:51 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <20260408a@crcomp.net> (permalink) |
| References | <6tltskde2lkpbo4s5g44ujar7b2tttk0k9@4ax.com> <10qnk66$1mmha$2@dont-email.me> <10qnnpj$1o87j$1@dont-email.me> |
piglet wrote:
<snip>
> To light LEDs you can probably do without ICs or even capacitors, here
> is an almost-two-terminal very cheap and dirty switcher idea ...
>
> <https://www.dropbox.com/scl/fi/4w3k0rvr5g7up8occfsjj/Buck_Hysteretic.jpeg?rlkey=bb2nlbzyzprxrzegb9wfddem4&st=n3btk1il&raw=1>
Thank you for sharing. The cheap LD24AJTA [1] constant current driver
is powered by a ?popular? PT4115 [2] IC deployed in the style of a buck
converter.
Allow me to transition this topic to 120 VAC LED COB filaments. This
picture shows such specimens, with the topmost powered-on and the
bottommost powered-off:
<https://crcomp.net/led/accob.png>
The protoboard's black wire connects to 120 ACV Line while its white
wire connects to Neutral. My goal is to discover the silicon secrets
in such a simple filament.
Note:
[1] <https://eletechsup.com/products/ld24ajta-5000-1-dimming-dc-6-24v-22w-adjustable-constant-current-step-down-high-brightnes>
[2] <https://static.chipdip.ru/lib/848/DOC018848756.pdf>
--
73, Don, KB7RPU veritas _|_
liberabit |
https://www.qsl.net/kb7rpu vos |
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silly circuit john larkin <jl@glen--canyon.com> - 2026-04-02 13:56 -0700
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-03 16:45 +1100
Re: silly circuit piglet <erichpwagner@hotmail.com> - 2026-04-03 06:47 +0000
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-03 04:31 -0700
Re: silly circuit "Don" <g@crcomp.net> - 2026-04-08 15:51 +0000
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-03 08:20 -0700
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-04 03:10 +1100
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-03 09:29 -0700
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-04 04:48 +1100
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-03 14:07 -0700
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-04 17:33 +1100
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-04 03:59 -0700
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-05 00:35 +1100
Re: silly circuit someone <2a59d59e3809f827ce709d3815e3950eef4a6a93af5557a93a7fdfba71460843@example.com> - 2026-04-09 03:30 +0000
Re: silly circuit "Edward Rawde" <invalid@invalid.invalid> - 2026-04-03 13:27 -0400
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-04 17:22 +1100
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-04 18:07 -0700
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-05 12:24 +1000
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-04 19:37 -0700
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-05 14:14 +1000
Re: silly circuit "Edward Rawde" <invalid@invalid.invalid> - 2026-04-05 01:10 -0400
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-05 01:57 -0700
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-06 02:59 +1000
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-05 10:10 -0700
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-06 03:47 +1000
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-05 11:02 -0700
Re: silly circuit "Edward Rawde" <invalid@invalid.invalid> - 2026-04-05 14:07 -0400
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-05 12:23 -0700
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-06 15:01 +1000
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-06 07:25 -0700
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-07 03:47 +1000
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-06 12:08 -0700
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-07 16:34 +1000
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-07 11:02 -0700
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-08 23:28 +1000
Re: silly circuit piglet <erichpwagner@hotmail.com> - 2026-04-08 16:13 +0000
Re: silly circuit piglet <erichpwagner@hotmail.com> - 2026-04-07 15:58 +0100
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-07 09:00 -0700
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-08 23:48 +1000
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-08 09:41 -0700
Re: silly circuit "Edward Rawde" <invalid@invalid.invalid> - 2026-04-06 11:56 -0400
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-07 03:55 +1000
Re: silly circuit "Edward Rawde" <invalid@invalid.invalid> - 2026-04-06 14:12 -0400
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-07 16:05 +1000
Re: silly circuit "Edward Rawde" <invalid@invalid.invalid> - 2026-04-07 09:27 -0400
Re: silly circuit Bill Sloman <bill.sloman@ieee.org> - 2026-04-08 01:53 +1000
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-07 09:06 -0700
Re: silly circuit "Edward Rawde" <invalid@invalid.invalid> - 2026-04-07 12:46 -0400
Re: silly circuit john larkin <jl@glen--canyon.com> - 2026-04-07 11:31 -0700
Re: silly circuit "Edward Rawde" <invalid@invalid.invalid> - 2026-04-07 16:06 -0400
Re: silly circuit "Edward Rawde" <invalid@invalid.invalid> - 2026-04-07 16:12 -0400
Re: silly circuit JM <sunaecoNoChoppedPork@gmail.com> - 2026-04-08 00:50 +0100
Re: silly circuit "Edward Rawde" <invalid@invalid.invalid> - 2026-04-07 22:35 -0400
Re: silly circuit "Edward Rawde" <invalid@invalid.invalid> - 2026-04-05 22:16 -0400
Re: silly circuit piglet <erichpwagner@hotmail.com> - 2026-04-05 22:27 +0100
Re: silly circuit someone <2a59d59e3809f827ce709d3815e3950eef4a6a93af5557a93a7fdfba71460843@example.com> - 2026-04-09 03:45 +0000
A fully floating BJT-based LED current driver "Don" <g@crcomp.net> - 2026-04-09 09:17 +0000
Re: A fully floating BJT-based LED current driver JM <sunaecoNoChoppedPork@gmail.com> - 2026-04-09 16:16 +0100
Re: A fully floating BJT-based LED current driver "Don" <g@crcomp.net> - 2026-04-09 22:03 +0000
Re: A fully floating BJT-based LED current driver john larkin <jl@glen--canyon.com> - 2026-04-09 16:46 -0700
Re: A fully floating BJT-based LED current driver john larkin <jl@glen--canyon.com> - 2026-04-09 16:57 -0700
Re: A fully floating BJT-based LED current driver "Don" <g@crcomp.net> - 2026-04-10 03:24 +0000
Re: A fully floating BJT-based LED current driver JM <sunaecoNoChoppedPork@gmail.com> - 2026-04-10 17:34 +0100
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