Re: [EE]:: LM317 amplifiers - 2Hz flat to100Khz, THD ~= 0.012% at 1 kHz (applications)

Also BCC to Brooke as of *possible *interest.

On Sun, 4 May 2025 at 11:19, Brooke <[email protected]> wrote:

> Hi Russell:  If it's this John "Free Energy" Bedini I'd take anything he
> said with a large grain of salt.
>
> https://www.youtube.com/watch?v=sqaM_A9A060&list=PL72EOQ48KSP4IDkQ9hq81foNSE--ivs5g
>
> Brooke -

1. His products from his amplifier days seem to be EXTREMELY well spoken
of, as are his LM317 versions - which were a small run.

2. I did some searching. YES it is the same man. YES he went off into free
energy along the way and what I saw at a quick look around would lead one
to think he was deluded or a scammer.
Things happen to many people with age, as no doubt you know. (Hey - I'm 74
- I know :-) ). He died a while ago.

3. See 1.
There is a link trail from my original link to someone else's LM317
amplifier that says similar things to the original claims.
He said 2 Hz - 100 kHz flat on simulation and over 30 kHz on test at fill
power (a few watts).
THD in the 0.111% range at 1 kHz.
MAY all be rubbish, but it tends to not seem so.

____________________________

Brooke: Wandering through your website I found the SDU-5/E emergency strobe
page.
Anything that does interesting things on small batteries is of interest at
present due to my recent playings.
I'm about to send 4 trial lights to Kenya for use in refugee camp toilets.
They operate at about 500 microwatt (150 uA into the LED). 5 years all
night use with 3 x AA or 1 x D (different circuits).
"Somewhat less" visible than the strobes :-). Still amazingly useful.


     Russell