Joule Thief

[giantkiller]

The blob is correctly term 'ASIC' application specific integrated circuit.

[guruji]

Get a JT that can operate at slightly over this frequency. Then
get a  quartz crystal cut for this frequency. Attach the crystal
leads to various points in the JT untill it locks in. Make sure you
are not "stepping" on anyone during its use.

:S:MarkSCoffman

What is so important about the freq 174926hz? Can someone tell me please?
Thanks

[detrix42]

What is so important about the freq 174926hz? Can someone tell me please?
Thanks

I am reading the research on another thread: the one on the TPU which is a "Toroidal Power Unit".  On that thread, there is mention that 174926Hz is the resonant frequency of Earth's magnetic field.  I thought that if I could get a joule thief to oscillate at that frequency, there may be a change of getting Earth's magnetic field to add to what's going on in a joule thief.  But due to further reading, there may be more to it....But I want to try with just that frequency to see what happens.

Detrix42

[mscoffman]

The blob is correctly term 'ASIC' application specific integrated circuit.

Disagree, or can't tell. ASIC means the company that manufactures the light
specifically designed the IC for that particular light's function.

It simply starts out as a "bare die" meaning it has no epoxy package often it's
passivated - a silicon dioxide coating designed to keep oxygen away from the
chip. For example the ROM in a video game is sometimes installed this way yet
that doesn't make it an ASIC. But a proprietary ROM.

They are talking about the China Inc. IC JD1803 above. Yield; 1M units per month.

:S:MarkSCoffman

[giantkiller]

Remove the blob to expose the silicon die. That means there are very fine gold leads from the board to the die connecting plates or areas. With out the protective blob the microfine connections would be damaged. In business all things put in place are reasonable.
A rom is an IC. A resistor ladder on ceramic is an IC. A bare die serves no purpose. What is on the boards is an etched die. Silicon circuits are not effected operationally by air except to remove thermal build up. ASICs perform a specific product function whether logic, data or analog process.