Hi

Scope shot of loaded audio transformer.

spark

Hi Dr.Spark,
many thanks for
the new postings.
But we need to know the ohmic resistance of the transformer
primary and secondary windings, so to say anything at all.

Also in the test with the 10 Ohm loaded secondary transformer you forgot
to test the input current.

Please let us know.
Many thanks.

Regards, Stefan.
P.S: The first posted scopeshot had an input power of about 0.2 Watts.
( The one with the open scondary transformer winding)

Quote from: drspark on April 05, 2007, 03:39:29 PM
Hi

Scope shot of loaded audio transformer.

spark

This looks like it has around 40 Watts output at the 10 Ohms resistor !
around 20 Volts folded, when integrated so Voltage^2 / 10 Ohm= 40 Watts.

What wattage type resistor do you use there ?
Does it get warm ?
Can you please show a scopeshot of the input current at the other input 10 Ohm resistor ?
Many thanks.

Dr.Spark,
maybe you can verify with 2 x 12 Volts / 20 Watts  or higher type halogen lamp in series
instead of the 10 Ohm resistor,
if your last circuit really puts out around 40 Watts ?
So do these bulbs shine bright ?

What is then the input current scope shot  at the other 10 ohm resistor ?

Many thanks.

Hi People

The transformer;
33.6ohms
2.4ohms
hair fine wire could never pass 40W
resister is brown black (real dark blue) LOL sorry ill remeasure later...

Working on a better transformer.... with 1 to 1 turn ratio and centertap.
Soon as i got the driver to work >10khz, I tryed that tiny transformer.
The 36ohm winding has no DC effect on the ping pong action (like its not there to hifreq)

Drspark