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YIHUA-937D Repair
#29
Evo slike i videa:


 https://streamable.com/ea1q0


I primjetio sam da se lemilica puunoo brze ugrije..a toroid je hladak tek na dodir ruke je da se osjeti da je topao...i spojeni su na isti vod toroida i elektornika i grijac i nema ama bas nikakvog problema...znaci da ona logika da se spaja posebno namotaj za elektroniku i poseban namotaj za grijac pada u vodu...ako se radi sa slabijim lemilicom ..moja je YIHUA 907A snage 36W i trafo snage 35W je taman...kod vecih snaga 50W pa na gore vjerujem da ima itekako razlike i da se mora poseban namotaj na elektroniku i poseban za grijac...kad uhvatim vremena napravit cu sa attiny i 7segmentnim displayed i potenciometrom mini verziju elektronike za soldering station i trijak + optocoupler kojeg okida attiny kada temerature padne/raste ispod zadane...nasam sam par stranica a arduino ima super stvari kako izmjeriti temperaturu thermistora sa CCS-o0m i otpornim djelilom gdje promjena otpora u thermistoru mjenja napon (jer je struja konstantna i mjerimo pad napona na poznatom otporniku..a ccs je izevedn preko LM317 i preko formule pretvaramo napon u stupnjeve...ali to jednom drugom prilikom jer moram da zavrsim sto sam zapoceo projekte...)


Na trijak sam stavio mali hladnjak...jer kinezi ga nisu stavili ali posto je jaci toroid treba manje vrijeme grijanja pa je i trijak manje vrijeme upaljen i time je hladan...ali dodao mu svejedno hladnjak..jer ko zna kakav ce biti kad u ljeti bude vani preko 30+C.

Eh..da uzemljenje sam direkt spojio na PCB...kod HAKKO 936 sheme na netu vidim da svi izmedju PCB i uzemljenja utikaca na 230V stavljaju izmedju 1M otpornik pa da pitam dali da ga stavim ili je tako ok?

Zahvaljujem svima na pomoci i ovaj sitni mod je osnazio lemnu stanicu uz izdatak od 15€...te svakako preporucam kod kupnje kineskih lemnih stanica zamjena EI slabog trafoa sa toroidom ovisno o snazi lemne ručke (36W ili 50W).
SAMO-BANOVAN OD 01.11.2024
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Messages In This Thread
YIHUA-937D Repair - by ronovar - 03-24-2018, 10:43 AM
RE: YIHUA-937D Repair - by deksi - 03-24-2018, 10:55 AM
RE: YIHUA-937D Repair - by Milan94 - 03-24-2018, 10:58 AM
RE: YIHUA-937D Repair - by ronovar - 03-24-2018, 11:17 AM
RE: YIHUA-937D Repair - by Dragan83 - 03-24-2018, 11:27 AM
RE: YIHUA-937D Repair - by ronovar - 03-24-2018, 11:43 AM
RE: YIHUA-937D Repair - by Milan94 - 03-24-2018, 11:52 AM
RE: YIHUA-937D Repair - by Milan94 - 03-24-2018, 11:33 AM
RE: YIHUA-937D Repair - by TDA - 03-24-2018, 12:02 PM
RE: YIHUA-937D Repair - by Dragan83 - 03-24-2018, 12:06 PM
RE: YIHUA-937D Repair - by ronovar - 03-24-2018, 12:09 PM
RE: YIHUA-937D Repair - by ronovar - 03-24-2018, 12:42 PM
RE: YIHUA-937D Repair - by Khadgar2007 - 03-24-2018, 12:56 PM
RE: YIHUA-937D Repair - by ronovar - 03-24-2018, 01:02 PM
RE: YIHUA-937D Repair - by ronovar - 03-25-2018, 12:21 PM
RE: YIHUA-937D Repair - by nik - 03-25-2018, 12:59 PM
RE: YIHUA-937D Repair - by ronovar - 03-25-2018, 01:06 PM
RE: YIHUA-937D Repair - by nik - 03-25-2018, 01:20 PM
RE: YIHUA-937D Repair - by ronovar - 03-25-2018, 02:50 PM
RE: YIHUA-937D Repair - by euronymous - 03-25-2018, 03:09 PM
RE: YIHUA-937D Repair - by ronovar - 03-25-2018, 04:42 PM
RE: YIHUA-937D Repair - by ronovar - 03-26-2018, 06:41 PM
RE: YIHUA-937D Repair - by Dragan83 - 03-26-2018, 07:40 PM
RE: YIHUA-937D Repair - by ronovar - 03-26-2018, 07:52 PM
RE: YIHUA-937D Repair - by euronymous - 03-26-2018, 08:43 PM
RE: YIHUA-937D Repair - by euronymous - 03-26-2018, 08:44 PM
RE: YIHUA-937D Repair - by ronovar - 03-27-2018, 10:00 AM
RE: YIHUA-937D Repair - by euronymous - 03-27-2018, 11:14 AM
RE: YIHUA-937D Repair - by ronovar - 03-27-2018, 02:09 PM

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