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1. LF: Re: HEF 4013 flip flop anomaly (score: 1): Author: VIGILANT Luis Fernández <[email protected]>; Date: Sun, 2 Jun 2019 20:38:07 +0000; Hi Chris One of the modifications I have done to the LF PA is related to the input at HEF4013 I was using the typical 220nF in series and a 12K and 10K resistors to +12V and GND The exciter is also a; /rsgb_lf_group-archives/html/rsgb_lf_group/2019-06/msg00006.html (11,986 bytes)
2. Re: LF: Re: HEF 4013 flip flop anomaly (score: 1): Author: Chris Wilson <[email protected]>; Date: Mon, 3 Jun 2019 16:56:40 +0100; Hello Luis, I am at work but will draft a more detailed post later. The new CD74HCT74E flip flop board shows similar horrible traces, so I think you may well be on to something here! Thank you. My do; /rsgb_lf_group-archives/html/rsgb_lf_group/2019-06/msg00007.html (13,699 bytes)
3. Re: LF: Re: HEF 4013 flip flop anomaly (score: 1): Author: DK7FC <[email protected]>; Date: Mon, 03 Jun 2019 22:11:30 +0200; If that voltage divider is against +12V, is that voltage level actually stable during switching? Maybe it is worth to spend a RC lowpass filter there, say 1 k and 100 nF and then adjust the DC workin; /rsgb_lf_group-archives/html/rsgb_lf_group/2019-06/msg00010.html (16,414 bytes)
4. Re: LF: Re: HEF 4013 flip flop anomaly (score: 1): Author: Chris Wilson <[email protected]>; Date: Wed, 5 Jun 2019 13:23:47 +0100; Hello all, We put the output of the si5351A and the level converter through an attenuator into my SA and things look horrible 9to me, but I am A: Not very good with the SA and B: frightened of blowin; /rsgb_lf_group-archives/html/rsgb_lf_group/2019-06/msg00017.html (16,884 bytes)

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