I’ve offered the hybrid transformers for quite awhile, and Chris, KD4PBJ, was the first to get some from me. He constructed a 1 kHz audio oscillator (see the photo), with a .068 uF and .0068 uF capacitor in parallel to tune the transformer to 1.004 kHz. I like the way he laid out the oscillator on a piece of copper PC board, with the squares of board glued to the ‘substrate’ as terminals to hold the component leads. This is a very effective way to build a stable circuit for radio frequencies, since it holds the components firmly in place.
He also has another project that I’ll write up in a following blog.
