Timeline for Fan control circuit not working, Fan remains ON
Current License: CC BY-SA 4.0
8 events
when toggle format | what | by | license | comment | |
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Oct 12, 2019 at 13:04 | comment | added | D.A.S. | Even a 100Vdc fan can be driven this way as long as the base driver gives at least 5~10% of the load current. | |
Oct 12, 2019 at 5:18 | comment | added | D.A.S. | added current limit base R. higher V+ ok | |
Oct 12, 2019 at 5:17 | history | edited | D.A.S. | CC BY-SA 4.0 |
added 44 characters in body
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Oct 11, 2019 at 22:28 | vote | accept | wgthompson | ||
Oct 11, 2019 at 22:27 | comment | added | wgthompson | Also quick question, if I were to want to use a more potent fan (lets say 12v) would this approach still work? | |
Oct 11, 2019 at 22:22 | comment | added | wgthompson | By the way I am using OD4010-05HB55-FAN, about .19A draw | |
Oct 11, 2019 at 22:20 | comment | added | wgthompson | Sunnyskyguy I am a little confused however, you have the pnp stage before the npn. So when THERM goes low 3.3 will pass through to the base of the npn (q3), wont this voltage still not turn on q3 since since still less than V at q3s collector (5V)? | |
Oct 11, 2019 at 18:36 | history | answered | D.A.S. | CC BY-SA 4.0 |