Very nice work, Ed. Looking forward to future installments of "Ed's transformer adventures"!
--Cheers
Tom
--
Prof. Thomas H. Lee
Allen Ctr., Rm. 205
420 Via Palou Mall
Stanford University
Stanford, CA 94305-4070
toggle quoted message
Show quoted text
On 2/15/2023 14:14, Ed Breya via groups.io wrote:
The two-stage transformer works beautifully up to just over 100 MHz. The low frequency cutoff is around 5 kHz at 2.5 R driving source. I also tried direct drive from 50 R, with a 50 R load in parallel. The lower cutoff went up to around 100 kHz, as expected, and the output was flat within 3 dB or so. It was very flat up to around 50 MHz, then gradually sloped upward. This all was using the primary in series hookup (it's 20 T bifilar so can be 20 or 40 T), with maximum magnetizing inductance (about 120 uH) for lowest cutoff.
