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Ruski C/ESR metar
#41
Imam par pitanja oko navedenog ESR-metra:

- za dobivanje -5VDC author je koristio ICL7660 koji +5VDC pretvara u -5VDC (tu me zanima zašto se išlo na kompliciraniju tehniku kad postoji 79L05?, jer ja bih koristio rješenje sa 79L05 i izbacio komplet sklop sa ICL7660)
- pin 15 i 16 kod LCD-a koji se koriste za pozadinsko osvjetljenje kamo su spojeni? (pošto na shemi ih nema ucrtanih)
- pin 14 ide na +5VDC a pin 7 ide na GND (CD4066 nema ucrtana ova dva pina na shemi a bez njih CD4066 neće raditi jer nema napajanje)
- zašto kod ni jednog OPAMP-a (uključujući i PIC) nema elektrolita 22uF/16V? Ima samo 100nF blok kondenzator na shemi, a iz praksi se kod OPAMPA uvijek koristi 22uF/16V + 100nF u paraleli čim bliže nogicama OPAMP-a.
- kod designa PCB-a mislim koristiti bottom layer za sve veze osim GND, a top layer bi koristio samo za GND (koliko vidim ovo rješenje se puno koristi kod OPAMP-ova i digitalne elektronike pa bih išao na tu foru)
- PCB bih dizajnirao za plavi LCD 16x2 (pinovi sa lijeve strane), i kutija koja bi išla 86 Plastic Box koja ima 4 rupe već izbušene, a redosljed bi bio:

   - izlaz za dvije žice na koje se prikljućuje na ispitni kondenzator
   - "+" button
   - "SET" button
   - "-" button

[Image: attachment.php?aid=30484]


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SAMO-BANOVAN OD 01.11.2024
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Messages In This Thread
Ruski C/ESR metar - by LordZi - 10-26-2015, 12:36 PM
RE: Ruski C/ESR metar - by TDA - 10-27-2015, 11:51 AM
RE: Ruski C/ESR metar - by LordZi - 10-27-2015, 12:32 PM
RE: Ruski C/ESR metar - by Dragan83 - 01-11-2017, 07:46 PM
RE: Ruski C/ESR metar - by LordZi - 01-11-2017, 07:51 PM
RE: Ruski C/ESR metar - by Dragan83 - 01-11-2017, 08:02 PM
RE: Ruski C/ESR metar - by Dragan83 - 01-11-2017, 08:39 PM
RE: Ruski C/ESR metar - by LordZi - 01-11-2017, 09:09 PM
RE: Ruski C/ESR metar - by Dragan83 - 01-11-2017, 09:23 PM
RE: Ruski C/ESR metar - by Dragan83 - 01-11-2017, 09:26 PM
RE: Ruski C/ESR metar - by Dragan83 - 01-11-2017, 09:43 PM
RE: Ruski C/ESR metar - by Dragan83 - 01-11-2017, 11:22 PM
RE: Ruski C/ESR metar - by LordZi - 01-12-2017, 12:05 AM
RE: Ruski C/ESR metar - by Dragan83 - 01-12-2017, 02:11 PM
RE: Ruski C/ESR metar - by LordZi - 01-12-2017, 04:09 PM
RE: Ruski C/ESR metar - by Dragan83 - 01-13-2017, 11:58 AM
RE: Ruski C/ESR metar - by LordZi - 01-13-2017, 03:40 PM
RE: Ruski C/ESR metar - by Dragan83 - 01-14-2017, 10:29 AM
RE: Ruski C/ESR metar - by LordZi - 01-14-2017, 10:37 AM
RE: Ruski C/ESR metar - by Dragan83 - 01-14-2017, 10:42 AM
RE: Ruski C/ESR metar - by Dragan83 - 01-15-2017, 12:09 PM
RE: Ruski C/ESR metar - by LordZi - 01-15-2017, 02:49 PM
RE: Ruski C/ESR metar - by Dragan83 - 01-15-2017, 03:00 PM
RE: Ruski C/ESR metar - by LordZi - 01-15-2017, 06:03 PM
RE: Ruski C/ESR metar - by Dragan83 - 01-15-2017, 06:43 PM
RE: Ruski C/ESR metar - by tesla017 - 01-16-2017, 10:16 AM
RE: Ruski C/ESR metar - by LordZi - 01-16-2017, 10:57 AM
RE: Ruski C/ESR metar - by tesla017 - 01-16-2017, 11:05 AM
RE: Ruski C/ESR metar - by Dragan83 - 01-19-2017, 04:48 PM
RE: Ruski C/ESR metar - by mikikg - 01-19-2017, 04:57 PM
RE: Ruski C/ESR metar - by LordZi - 01-19-2017, 05:14 PM
RE: Ruski C/ESR metar - by gorankg - 01-19-2017, 07:36 PM
RE: Ruski C/ESR metar - by Gosha - 01-19-2017, 10:05 PM
RE: Ruski C/ESR metar - by LordZi - 01-19-2017, 10:26 PM
RE: Ruski C/ESR metar - by Gosha - 01-19-2017, 11:13 PM
RE: Ruski C/ESR metar - by LordZi - 01-19-2017, 11:28 PM
RE: Ruski C/ESR metar - by BeliNinja - 01-19-2017, 10:13 PM
RE: Ruski C/ESR metar - by tomam - 01-19-2017, 11:44 PM
RE: Ruski C/ESR metar - by Milan94 - 01-20-2017, 12:44 AM
RE: Ruski C/ESR metar - by midji84 - 01-20-2017, 09:54 AM
RE: Ruski C/ESR metar - by ronovar - 07-02-2019, 01:23 PM
RE: Ruski C/ESR metar - by emiSAr - 07-02-2019, 01:39 PM
RE: Ruski C/ESR metar - by ronovar - 07-02-2019, 01:46 PM
RE: Ruski C/ESR metar - by emiSAr - 07-02-2019, 02:02 PM
RE: Ruski C/ESR metar - by ZASto - 07-02-2019, 03:53 PM
RE: Ruski C/ESR metar - by ronovar - 07-02-2019, 05:47 PM
RE: Ruski C/ESR metar - by emiSAr - 07-02-2019, 06:20 PM
RE: Ruski C/ESR metar - by ronovar - 07-02-2019, 06:57 PM
RE: Ruski C/ESR metar - by emiSAr - 07-02-2019, 07:45 PM
RE: Ruski C/ESR metar - by ronovar - 07-02-2019, 07:59 PM
RE: Ruski C/ESR metar - by emiSAr - 07-02-2019, 08:29 PM
RE: Ruski C/ESR metar - by ronovar - 07-02-2019, 08:52 PM
RE: Ruski C/ESR metar - by emiSAr - 07-02-2019, 09:09 PM
RE: Ruski C/ESR metar - by ronovar - 07-02-2019, 09:23 PM
RE: Ruski C/ESR metar - by emiSAr - 07-03-2019, 06:52 AM

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