High Voltage CFL Circuit

[nievesoliveras]

Nice video!

Jesus

[Pirate88179]

Jesus:

That is a ccfl inverter made by TDK.  This was all I could find so far:


Inverter : TDK TAD170 (5V) or 8m8619 (5Vor 12V)
Input current : 0,2A
Output current : 5,0 mArms
Drive frequency : 30 kHz (typ)

Interface connector
Used connector : IL-G-4S-S3C2 (*1)
Manufacturer : JAE
Pin No. Signal Name Function
1 HV High Voltage
2 NC Not connected
3 NC Not connected
4 GND Ground

I found this info here:

http://www.beyondinfinite.com/lcd/Library/Hosidan/HLM8619-010300.pdf

I hope this helps a little.  Seems to me a decent JT circuit will out perform this thing using an AA battery though.

Bill

[nievesoliveras]

Thank you @pirate!

Which joule thief circuit configuration you recommend?

Jesus

[nievesoliveras]

Thanks be given to:

@mrmag
@kooler
@amigo
@light
@pirate

I learnt with the information given to this point, that the secret of the high ac voltage output of this particular driver lies on an efficient use of a two transistor oscillator circuit.

I learnt the inner transformer connections except, the one related to ground.

Jesus

[XS-NRG]

not only the oscillator.
the frequency in relation to the transformer is also important.
most of these circuits run at around 35Khz unloaded.

Here is one 12volt in 1200volt out.