REAL CAPTRET CIRCUIT

[shylo]

I don't see an led in that circuit?
But you can bounce charge from one cap to another, in the process use it to do work.
You still lose,but can the work be used , to aid the bouncing?
artv

[sm0ky2]

The Led was set between two potentials
the "backwards cap" acted as the ground fed by the
potential on the 2 series caps


"complex circuits", meaning those with multiple 'sources',
must be analyzed in pieces.
Each source is examined in its' own current loop
then the circuit is summed to determine the net I/O


In this case, the battery loop is broken down into 2 loops.
One through C2,
The other through the other caps.
A 3rd analyses is the loop using C2 as a source w/ series caps.


The 'use' of this type of circuit is often as a dynamic voltage control circuit
the potential between C2 and the series caps can be stabilized throughout
the lifetime of the battery charge, in many cases far below the cut-off voltage
of diodes and transistors. And in this manner, performs a similar action to a
Joule Thief, or a BatteryMax adapter

[clearchrome]

I can confirm that my battery stayed charged after 10 years (led not lit)...the only issues is that it light up randomly. Little taps on the circuit bring it to full power again...just weird behavior. If I toggle led swith every seconds, I get very bright flash foreever.

[e2matrix]

Can I assume that C2 and C3 are 47uf cap and not a 4u7f ??