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<div class="elementToProof"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">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.<br>
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<div dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Synth-diy <synth-diy-bounces@synth-diy.org> on behalf of cheater cheater via Synth-diy <synth-diy@synth-diy.org><br>
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<div class="PlainText">Has anyone ever tried putting transformers in pcb layers? I guess it<br>
wouldn't be audio frequencies (due to size), but it might still be<br>
fun. How about: Audio -> RF -> tiny transformer -> RF -> Audio?<br>
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