/diy/ - Do It Yourself

Anonymous Fri Aug 28 02:25:14 2020 No.1897497 [View]
File: 147 KB, 998x952, we get this.png [View same] [iqdb] [saucenao] [google]

>>1897400
It confirms that they're using a CD4009 as a replacement to JFETs. JFETs which apparently have to be properly matched to one another for a phaser, who'd have thought? Anyhow, I was wondering if I could do this with the CD74HC04s I already have, instead of buying a CD4009 or two, but I can't seem to find an equivalent output diagram like in >>1897341. The 4009 is also meant to serve as a CMOS-TTL buffer, not just an inverter, so maybe there are some key differences I'd be missing. Maybe the analog behaviour is coming from that PFET with a somewhat unbound body connection.

So, considering Vdd is tied to Vcc is tied to Vinput:

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/diy/ - Do It Yourself

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