[sdiy] PCB Transformers

[Neil Johnson]

Google "pcb planar transformer".

Neil

On Thu, 19 Jan 2023 at 22:13, cheater cheater via Synth-diy <
synth-diy at synth-diy.org> wrote:

> Hah, curious. Never seen that construction!
>
> On Thu, Jan 19, 2023 at 10:59 PM Mike Bryant <mbryant at futurehorizons.com>
> wrote:
> >
> > yes this was very popular in mid-90s, especially for pulse transformers
> running around a MHz or so.  There were a range of low profile ferrite
> cores which fitted through holes in the PCB and snapped into the bottom
> half ferrite under the PCB without any clamps.  Haven't seen them for years
> though.
> >
> > ________________________________
> > From: Synth-diy <synth-diy-bounces at synth-diy.org> on behalf of cheater
> cheater via Synth-diy <synth-diy at synth-diy.org>
> >
> > Has anyone ever tried putting transformers in pcb layers? I guess it
> > wouldn't be audio frequencies (due to size), but it might still be
> > fun. How about: Audio -> RF -> tiny transformer -> RF -> Audio?
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