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1. LF: Today's soldering (score: 1): Author: DK7FC <[email protected]>; Date: Tue, 14 Jul 2015 23:16:57 +0200; Hi all, Just for fun i like to share large images showing compact circuits ;-) Today, the LO for the stereo MF RX https://dl.dropboxusercontent.com/u/19882028/MF/20150714_231144.jpg 73, Stefan PS: Fi; /rsgb_lf_group-archives/html/rsgb_lf_group/2015-07/msg00072.html (11,062 bytes)
2. Re: LF: Today's soldering (score: 1): Author: Andy Talbot <[email protected]>; Date: Wed, 15 Jul 2015 06:37:46 +0100; OK, I'm all confused now. The [HEF] 4013 is a dual Flip-Flop; how have you made it oscill with a crystal ? (Or have you hidden something under the board) Andy G4JNT On 14 July 2015 at 22:16, DK7FC; /rsgb_lf_group-archives/html/rsgb_lf_group/2015-07/msg00074.html (12,534 bytes)
3. Re: LF: Today's soldering (score: 1): Author: DK7FC <[email protected]>; Date: Wed, 15 Jul 2015 14:16:42 +0200; Yes, there's a JFET on the other side. So far a BF245A. It works well. But the circuit consumes 3.5 mA. I thought it could be less. It is running at 5V DC and the xtal frequency is 1.8432 MHz. I loo; /rsgb_lf_group-archives/html/rsgb_lf_group/2015-07/msg00075.html (13,285 bytes)
4. Re: LF: Today's soldering (score: 1): Author: Andy Talbot <[email protected]>; Date: Wed, 15 Jul 2015 14:00:33 +0100; Yes, there's a JFET on the other side. So far a BF245A. It works well. But the circuit consumes 3.5 mA. I thought it could be less. It is running at 5V DC and the xtal frequency is 1.8432 MHz. I loo; /rsgb_lf_group-archives/html/rsgb_lf_group/2015-07/msg00076.html (15,612 bytes)
5. Re: LF: Today's soldering (score: 1): Author: DK7FC <[email protected]>; Date: Wed, 15 Jul 2015 16:18:31 +0200; Am 15.07.2015 15:00, schrieb Andy Talbot: Assume you've tried putting an R||C in the source to bias the BF245 back a bit and still ensure oscillation? Yes, probably during you wrote that mail i have; /rsgb_lf_group-archives/html/rsgb_lf_group/2015-07/msg00077.html (12,827 bytes)

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