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Ruski C/ESR metar
#52
Da vidio sam u DS da BS170 ima 5ohma RsdON što je puno.
Koju zamjenu predlazes da ima mali RdsON ranga mili ohma i da je u TO-92 kucistu?

Ucrtao sam tipkalo na shemu i povezao sa stabilizatorom pa ako mozes da provjeris jeli tako ok povezano jer nema doma ni jedan 78Lxx da provjerim dali tako moze da radi.
Isao sam logikom. sa baterije "+" je spojeni na diodu 1N4148 koja štiti od obrnutog polariteta ako korisnik okrene krivo 9V bateriju da se ne oštete poluvodiči. Zatim sam maknuo GND sa srednjeg pina 78L05 i stavio sam taj GND na BS170 koji kada se pritisne tipkalo daje masu na 78L05, koji zatim na izlazu daje +5V, tih +5V se tada vodi na ostale OPAMP-e i PIC, i na inverter napona ICL7660 koji na svom izlazu daje -5V za napajanje OPAMP-a koji rade na simtričnom naponu napajanja.

Kada se pritisne tipkalo još jednom, GND se otpaja sa 78L05, i na izlazu stabilizatora je 0V. Pošto su sve mase OPAMP-a, PIC-a i invertor napona spojene na GND, a GND je spojen direktno na 9V bateriju svi sklopovi su OFF, jer nema mase na 78L05 i stime nema +5V ni -5V sa kojima se napajaju OPAMP-i i PIC...dakle onu su u OFF stanju spojeni samo na GND bez +/-5VDC.

Eto jel sada tako valjda to da mogu sutra da crtam PCB polako ili nevalja to tako?


Attached Files
.pdf   C_ESR METER - Schematic.pdf (Size: 35,73 KB / Downloads: 11)
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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