Timeline for Voltage regulator UA78S09 (9V/2A) supplying only 0,4A of current
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 19, 2016 at 12:01 | vote | accept | Lukasz | ||
| Apr 12, 2016 at 17:27 | comment | added | Spehro 'speff' Pefhany | It's a 50W TO-220 transistor. Any similar POWER PNP transistor (probably TO-220 or TO-246 case) can be used (eg. 2N2955). It will need a heat sink. | |
| Apr 12, 2016 at 16:30 | comment | added | Lukasz | For higher current circuit: Can I replace bd536 transistor with any other (I have some popular ones: 222...) or is it special one? | |
| Apr 12, 2016 at 12:58 | history | edited | Spehro 'speff' Pefhany | CC BY-SA 3.0 |
added 114 characters in body
|
| Apr 12, 2016 at 12:43 | history | edited | Spehro 'speff' Pefhany | CC BY-SA 3.0 |
added 314 characters in body
|
| Apr 12, 2016 at 12:36 | history | edited | Spehro 'speff' Pefhany | CC BY-SA 3.0 |
added 314 characters in body
|
| Apr 12, 2016 at 12:26 | comment | added | Spehro 'speff' Pefhany | Perhaps the information you gave that the output is 9V is not correct then. Of course we are talking about when the motor is connected and running, the output voltage should be 9V. | |
| Apr 12, 2016 at 12:25 | comment | added | Lukasz | I know it is not job of regulator to force current but it is stil its job to be able to provide enough current on request (2A according to specs). When I connect the same motor to the 9V standard battery I see on multimeter that it can draw as much as 1,5A but when connected do regulator - it does not even move. | |
| Apr 12, 2016 at 12:20 | history | answered | Spehro 'speff' Pefhany | CC BY-SA 3.0 |